390796884 has 144 divisors (see below), whose sum is σ = 1085011200. Its totient is φ = 118130688.

The previous prime is 390796873. The next prime is 390796897. The reversal of 390796884 is 488697093.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 390796884.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2852464 + ... + 2852600.

It is an arithmetic number, because the mean of its divisors is an integer number (7534800).

Almost surely, 2^390796884 is an apocalyptic number.

390796884 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390796884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542505600).

390796884 is an abundant number, since it is smaller than the sum of its proper divisors (694214316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390796884 is a wasteful number, since it uses less digits than its factorization.

390796884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 390796884 is about 19768.5832572797. The cubic root of 390796884 is about 731.1116384285. Note that the first 3 decimals are identical.

The spelling of 390796884 in words is "three hundred ninety million, seven hundred ninety-six thousand, eight hundred eighty-four".