390902 has 8 divisors (see below), whose sum is σ = 589512. Its totient is φ = 194400.

The previous prime is 390893. The next prime is 390953. The reversal of 390902 is 209093.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 887.

It is an arithmetic number, because the mean of its divisors is an integer number (73689).

2³⁹⁰⁹⁰² is an apocalyptic number.

390902 is a deficient number, since it is larger than the sum of its proper divisors (198610).

390902 is a wasteful number, since it uses less digits than its factorization.

390902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 390902 is about 625.2215607287. The cubic root of 390902 is about 73.1177183681.

Adding to 390902 its reverse (209093), we get a palindrome (599995).

The spelling of 390902 in words is "three hundred ninety thousand, nine hundred two".