Search a number
-
+
994885141 = 1821154631
BaseRepresentation
bin111011010011001…
…011111000010101
32120100001101211211
4323103023320111
54014142311031
6242415501421
733440245525
oct7323137025
92510041754
10994885141
1147064aa28
12239227871
1312b169043
14961b9685
155c520bb1
hex3b4cbe15

994885141 has 4 divisors (see below), whose sum is σ = 994957984. Its totient is φ = 994812300.

The previous prime is 994885127. The next prime is 994885147. The reversal of 994885141 is 141588499.

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 a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(994885141) divides (994885141-1)3.

It is a cyclic number.

It is not a de Polignac number, because 994885141 - 29 = 994884629 is a prime.

It is a deceptive number, since it divides R994885140.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994885147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9105 + ... + 45526.

It is an arithmetic number, because the mean of its divisors is an integer number (248739496).

Almost surely, 2994885141 is an apocalyptic number.

994885141 is the 18211-st octagonal number.

It is an amenable number.

994885141 is a deficient number, since it is larger than the sum of its proper divisors (72843).

994885141 is a wasteful number, since it uses less digits than its factorization.

994885141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72842.

The product of its digits is 414720, while the sum is 49.

The square root of 994885141 is about 31541.7999010836. The cubic root of 994885141 is about 998.2921318469.

The spelling of 994885141 in words is "nine hundred ninety-four million, eight hundred eighty-five thousand, one hundred forty-one".

Divisors: 1 18211 54631 994885141