83904161 has 12 divisors (see below), whose sum is σ = 95691120. Its totient is φ = 72955080.

The previous prime is 83904151. The next prime is 83904169. The reversal of 83904161 is 16140938.

It is a happy number.

It is not a de Polignac number, because 83904161 - 2¹⁰ = 83903137 is a prime.

It is a super-2 number, since 2×83904161² = 14079816466227842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83904169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1391 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (7974260).

Almost surely, 2^83904161 is an apocalyptic number.

It is an amenable number.

83904161 is a deficient number, since it is larger than the sum of its proper divisors (11786959).

83904161 is a wasteful number, since it uses less digits than its factorization.

83904161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14476 (or 14453 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 83904161 is about 9159.9214516283. The cubic root of 83904161 is about 437.7852915822.

The spelling of 83904161 in words is "eighty-three million, nine hundred four thousand, one hundred sixty-one".