390887 has 8 divisors (see below), whose sum is σ = 470400. Its totient is φ = 317304.

The previous prime is 390883. The next prime is 390889. The reversal of 390887 is 788093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390887 - 2² = 390883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337 + ... + 1602.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2³⁹⁰⁸⁸⁷ is an apocalyptic number.

390887 is a deficient number, since it is larger than the sum of its proper divisors (79513).

390887 is a wasteful number, since it uses less digits than its factorization.

390887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 390887 is about 625.2095648661. The cubic root of 390887 is about 73.1167831126.

The spelling of 390887 in words is "three hundred ninety thousand, eight hundred eighty-seven".