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3487990141 = 31112515811
BaseRepresentation
bin1100111111100110…
…1000000101111101
3100000002021020222001
43033321220011331
524120411141031
61334035422301
7152302266316
oct31771500575
910002236861
103487990141
11152a974689
12814154991
13437822cbc
1425135360d
15156338861
hexcfe6817d

3487990141 has 4 divisors (see below), whose sum is σ = 3600505984. Its totient is φ = 3375474300.

The previous prime is 3487990087. The next prime is 3487990157. The reversal of 3487990141 is 1410997843.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1410997843 = 2753512531.

It is a cyclic number.

It is not a de Polignac number, because 3487990141 - 217 = 3487859069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3487990091 and 3487990100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3487990741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56257875 + ... + 56257936.

It is an arithmetic number, because the mean of its divisors is an integer number (900126496).

Almost surely, 23487990141 is an apocalyptic number.

3487990141 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3487990141 is a deficient number, since it is larger than the sum of its proper divisors (112515843).

3487990141 is a wasteful number, since it uses less digits than its factorization.

3487990141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112515842.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 3487990141 is about 59059.2087739076. The cubic root of 3487990141 is about 1516.5558764997. Note that the first 3 decimals are identical.

The spelling of 3487990141 in words is "three billion, four hundred eighty-seven million, nine hundred ninety thousand, one hundred forty-one".

Divisors: 1 31 112515811 3487990141