57399438 has 16 divisors (see below), whose sum is σ = 115638480. Its totient is φ = 18993216.

The previous prime is 57399427. The next prime is 57399449. The reversal of 57399438 is 83499375.

It is an interprime number because it is at equal distance from previous prime (57399427) and next prime (57399449).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34093 + ... + 35736.

It is an arithmetic number, because the mean of its divisors is an integer number (7227405).

Almost surely, 2^57399438 is an apocalyptic number.

57399438 is an abundant number, since it is smaller than the sum of its proper divisors (58239042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57399438 is a wasteful number, since it uses less digits than its factorization.

57399438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69971.

The product of its digits is 816480, while the sum is 48.

The square root of 57399438 is about 7576.2416804112. The cubic root of 57399438 is about 385.7469907209.

The spelling of 57399438 in words is "fifty-seven million, three hundred ninety-nine thousand, four hundred thirty-eight".