390872 has 8 divisors (see below), whose sum is σ = 732900. Its totient is φ = 195432.

The previous prime is 390869. The next prime is 390877. The reversal of 390872 is 278093.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24422 + ... + 24437.

2³⁹⁰⁸⁷² is an apocalyptic number.

It is an amenable number.

390872 is a deficient number, since it is larger than the sum of its proper divisors (342028).

390872 is a wasteful number, since it uses less digits than its factorization.

390872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48865 (or 48861 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 390872 is about 625.1975687733. The cubic root of 390872 is about 73.1158478331.

The spelling of 390872 in words is "three hundred ninety thousand, eight hundred seventy-two".