83904657 has 4 divisors (see below), whose sum is σ = 111872880. Its totient is φ = 55936436.

The previous prime is 83904649. The next prime is 83904677. The reversal of 83904657 is 75640938.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 83904657 - 2³ = 83904649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83904607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13984107 + ... + 13984112.

It is an arithmetic number, because the mean of its divisors is an integer number (27968220).

Almost surely, 2^83904657 is an apocalyptic number.

It is an amenable number.

83904657 is a deficient number, since it is larger than the sum of its proper divisors (27968223).

83904657 is a wasteful number, since it uses less digits than its factorization.

83904657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27968222.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 83904657 is about 9159.9485260562. The cubic root of 83904657 is about 437.7861542374.

The spelling of 83904657 in words is "eighty-three million, nine hundred four thousand, six hundred fifty-seven".