57938239 has 4 divisors (see below), whose sum is σ = 60987640. Its totient is φ = 54888840.

The previous prime is 57938191. The next prime is 57938267. The reversal of 57938239 is 93283975.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57938239 is a prime.

It is a super-2 number, since 2×57938239² = 6713679076842242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57938269) 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, 1524672 + ... + 1524709.

It is an arithmetic number, because the mean of its divisors is an integer number (15246910).

Almost surely, 2^57938239 is an apocalyptic number.

57938239 is a deficient number, since it is larger than the sum of its proper divisors (3049401).

57938239 is a wasteful number, since it uses less digits than its factorization.

57938239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049400.

The product of its digits is 408240, while the sum is 46.

The square root of 57938239 is about 7611.7172175535. The cubic root of 57938239 is about 386.9502191664.

The spelling of 57938239 in words is "fifty-seven million, nine hundred thirty-eight thousand, two hundred thirty-nine".