388957 has 4 divisors (see below), whose sum is σ = 401536. Its totient is φ = 376380.

The previous prime is 388937. The next prime is 388961. The reversal of 388957 is 759883.

388957 is nontrivially palindromic in base 15.

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 an emirpimes, since its reverse is a distinct semiprime: 759883 = 17 ⋅44699.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6243 + ... + 6304.

It is an arithmetic number, because the mean of its divisors is an integer number (100384).

2³⁸⁸⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

388957 is a deficient number, since it is larger than the sum of its proper divisors (12579).

388957 is a wasteful number, since it uses less digits than its factorization.

388957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12578.

The product of its digits is 60480, while the sum is 40.

The square root of 388957 is about 623.6641724518. The cubic root of 388957 is about 72.9962467577.

The spelling of 388957 in words is "three hundred eighty-eight thousand, nine hundred fifty-seven".