57079869 has 16 divisors (see below), whose sum is σ = 94886400. Its totient is φ = 29651760.

The previous prime is 57079843. The next prime is 57079873. The reversal of 57079869 is 96897075.

It is not a de Polignac number, because 57079869 - 2⁷ = 57079741 is a prime.

It is a super-2 number, since 2×57079869² = 6516222890114322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57079879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123319 + ... + 123780.

It is an arithmetic number, because the mean of its divisors is an integer number (5930400).

Almost surely, 2^57079869 is an apocalyptic number.

It is an amenable number.

57079869 is a deficient number, since it is larger than the sum of its proper divisors (37806531).

57079869 is a wasteful number, since it uses less digits than its factorization.

57079869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247120.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 57079869 is about 7555.1220373995. The cubic root of 57079869 is about 385.0297812460.

It can be divided in two parts, 5707 and 9869, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 57079869 in words is "fifty-seven million, seventy-nine thousand, eight hundred sixty-nine".