57899639 has 4 divisors (see below), whose sum is σ = 66171024. Its totient is φ = 49628256.

The previous prime is 57899627. The next prime is 57899651. The reversal of 57899639 is 93699875.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (57899627) and next prime (57899651).

It is a cyclic number.

It is not a de Polignac number, because 57899639 - 2⁴ = 57899623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57899839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4135682 + ... + 4135695.

It is an arithmetic number, because the mean of its divisors is an integer number (16542756).

Almost surely, 2^57899639 is an apocalyptic number.

57899639 is a deficient number, since it is larger than the sum of its proper divisors (8271385).

57899639 is an equidigital number, since it uses as much as digits as its factorization.

57899639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271384.

The product of its digits is 3674160, while the sum is 56.

The square root of 57899639 is about 7609.1812305924. The cubic root of 57899639 is about 386.8642678907.

The spelling of 57899639 in words is "fifty-seven million, eight hundred ninety-nine thousand, six hundred thirty-nine".