390087 has 12 divisors (see below), whose sum is σ = 570960. Its totient is φ = 256608.

The previous prime is 390083. The next prime is 390097. The reversal of 390087 is 780093.

It is a happy number.

It is not a de Polignac number, because 390087 - 2² = 390083 is a prime.

It is an Ulam number.

390087 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 390087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558 + ... + 1044.

It is an arithmetic number, because the mean of its divisors is an integer number (47580).

2³⁹⁰⁰⁸⁷ is an apocalyptic number.

390087 is a deficient number, since it is larger than the sum of its proper divisors (180873).

390087 is a wasteful number, since it uses less digits than its factorization.

390087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 390087 is about 624.5694517025. The cubic root of 390087 is about 73.0668681101.

The spelling of 390087 in words is "three hundred ninety thousand, eighty-seven".