390386882 has 32 divisors (see below), whose sum is σ = 625121280. Its totient is φ = 182327760.

The previous prime is 390386881. The next prime is 390386891. The reversal of 390386882 is 288683093.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (390386881) 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 15 ways as a sum of consecutive naturals, for example, 1440407 + ... + 1440677.

It is an arithmetic number, because the mean of its divisors is an integer number (19535040).

Almost surely, 2^390386882 is an apocalyptic number.

390386882 is a deficient number, since it is larger than the sum of its proper divisors (234734398).

390386882 is a wasteful number, since it uses less digits than its factorization.

390386882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 390386882 is about 19758.2104958926. The cubic root of 390386882 is about 730.8558686268.

The spelling of 390386882 in words is "three hundred ninety million, three hundred eighty-six thousand, eight hundred eighty-two".