57998889 has 32 divisors (see below), whose sum is σ = 92991360. Its totient is φ = 35515584.

The previous prime is 57998881. The next prime is 57998891. The reversal of 57998889 is 98889975.

It is not a de Polignac number, because 57998889 - 2³ = 57998881 is a prime.

It is a super-2 number, since 2×57998889² = 6727742250468642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57998881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130702 + ... + 131144.

It is an arithmetic number, because the mean of its divisors is an integer number (2905980).

Almost surely, 2^57998889 is an apocalyptic number.

It is an amenable number.

57998889 is a deficient number, since it is larger than the sum of its proper divisors (34992471).

57998889 is a wasteful number, since it uses less digits than its factorization.

57998889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 832 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 63.

The square root of 57998889 is about 7615.7001647912. The cubic root of 57998889 is about 387.0851924700.

The spelling of 57998889 in words is "fifty-seven million, nine hundred ninety-eight thousand, eight hundred eighty-nine".