57989 has 4 divisors (see below), whose sum is σ = 58656. Its totient is φ = 57324.

The previous prime is 57977. The next prime is 57991. The reversal of 57989 is 98975.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 57989 - 2⁴ = 57973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 384.

It is an arithmetic number, because the mean of its divisors is an integer number (14664).

2⁵⁷⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

57989 is a deficient number, since it is larger than the sum of its proper divisors (667).

57989 is a wasteful number, since it uses less digits than its factorization.

57989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666.

The product of its digits is 22680, while the sum is 38.

The square root of 57989 is about 240.8090529860. The cubic root of 57989 is about 38.7063191456.

The spelling of 57989 in words is "fifty-seven thousand, nine hundred eighty-nine".