57839965 has 8 divisors (see below), whose sum is σ = 69449400. Its totient is φ = 46244352.

The previous prime is 57839923. The next prime is 57839981. The reversal of 57839965 is 56993875.

It can be written as a sum of positive squares in 4 ways, for example, as 4301476 + 53538489 = 2074^2 + 7317^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57839965 is a prime.

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, 12261 + ... + 16309.

It is an arithmetic number, because the mean of its divisors is an integer number (8681175).

Almost surely, 2^57839965 is an apocalyptic number.

It is an amenable number.

57839965 is a deficient number, since it is larger than the sum of its proper divisors (11609435).

57839965 is a wasteful number, since it uses less digits than its factorization.

57839965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911.

The product of its digits is 2041200, while the sum is 52.

The square root of 57839965 is about 7605.2590356937. The cubic root of 57839965 is about 386.7313155710.

It can be divided in two parts, 57 and 839965, that multiplied together give a triangular number (47878005 = T₉₇₈₅).

The spelling of 57839965 in words is "fifty-seven million, eight hundred thirty-nine thousand, nine hundred sixty-five".