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8900149 = 23386963
BaseRepresentation
bin100001111100…
…111000110101
3121202011201011
4201330320311
54234301044
6514432221
7135435646
oct41747065
917664634
108900149
1150298a5
122b92671
131ac807b
1412796cd
15bac134
hex87ce35

8900149 has 4 divisors (see below), whose sum is σ = 9287136. Its totient is φ = 8513164.

The previous prime is 8900123. The next prime is 8900159. The reversal of 8900149 is 9410098.

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: 9410098 = 24705049.

It is a cyclic number.

It is not a de Polignac number, because 8900149 - 215 = 8867381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8900149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8900159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193459 + ... + 193504.

It is an arithmetic number, because the mean of its divisors is an integer number (2321784).

Almost surely, 28900149 is an apocalyptic number.

It is an amenable number.

8900149 is a deficient number, since it is larger than the sum of its proper divisors (386987).

8900149 is a wasteful number, since it uses less digits than its factorization.

8900149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386986.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8900149 is about 2983.3117503875. The cubic root of 8900149 is about 207.2362662800.

The spelling of 8900149 in words is "eight million, nine hundred thousand, one hundred forty-nine".

Divisors: 1 23 386963 8900149