390984488 has 8 divisors (see below), whose sum is σ = 733095930. Its totient is φ = 195492240.

The previous prime is 390984443. The next prime is 390984497. The reversal of 390984488 is 884489093.

It can be written as a sum of positive squares in only one way, i.e., 388168804 + 2815684 = 19702^2 + 1678^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24436523 + ... + 24436538.

Almost surely, 2^390984488 is an apocalyptic number.

It is an amenable number.

390984488 is a deficient number, since it is larger than the sum of its proper divisors (342111442).

390984488 is a wasteful number, since it uses less digits than its factorization.

390984488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48873067 (or 48873063 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The square root of 390984488 is about 19773.3276916153. The cubic root of 390984488 is about 731.2286109798.

The spelling of 390984488 in words is "three hundred ninety million, nine hundred eighty-four thousand, four hundred eighty-eight".