390800980 has 24 divisors (see below), whose sum is σ = 821745288. Its totient is φ = 156117888.

The previous prime is 390800951. The next prime is 390800983. The reversal of 390800980 is 89008093.

It can be written as a sum of positive squares in 4 ways, for example, as 10316944 + 380484036 = 3212^2 + 19506^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390800983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3682 + ... + 28198.

It is an arithmetic number, because the mean of its divisors is an integer number (34239387).

Almost surely, 2^390800980 is an apocalyptic number.

It is an amenable number.

390800980 is an abundant number, since it is smaller than the sum of its proper divisors (430944308).

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

390800980 is a wasteful number, since it uses less digits than its factorization.

390800980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25323 (or 25321 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 390800980 is about 19768.6868557322. The cubic root of 390800980 is about 731.1141927161.

The spelling of 390800980 in words is "three hundred ninety million, eight hundred thousand, nine hundred eighty".