57920439 has 8 divisors (see below), whose sum is σ = 77265792. Its totient is φ = 38594360.

The previous prime is 57920437. The next prime is 57920461. The reversal of 57920439 is 93402975.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57920439 - 2¹ = 57920437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57920397 and 57920406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57920437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5134 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (9658224).

Almost surely, 2^57920439 is an apocalyptic number.

57920439 is a deficient number, since it is larger than the sum of its proper divisors (19345353).

57920439 is a wasteful number, since it uses less digits than its factorization.

57920439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 57920439 is about 7610.5478777812. The cubic root of 57920439 is about 386.9105883486.

The spelling of 57920439 in words is "fifty-seven million, nine hundred twenty thousand, four hundred thirty-nine".