390922 has 12 divisors (see below), whose sum is σ = 682290. Its totient is φ = 167496.

The previous prime is 390893. The next prime is 390953. The reversal of 390922 is 229093.

It can be written as a sum of positive squares in only one way, i.e., 337561 + 53361 = 581^2 + 231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1897 + ... + 2092.

2³⁹⁰⁹²² is an apocalyptic number.

390922 is a deficient number, since it is larger than the sum of its proper divisors (291368).

390922 is a wasteful number, since it uses less digits than its factorization.

390922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005 (or 3998 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 390922 is about 625.2375548542. The cubic root of 390922 is about 73.1189653383.

The spelling of 390922 in words is "three hundred ninety thousand, nine hundred twenty-two".