390780196 has 12 divisors (see below), whose sum is σ = 684003852. Its totient is φ = 195350528.

The previous prime is 390780149. The next prime is 390780209. The reversal of 390780196 is 691087093.

It can be written as a sum of positive squares in 2 ways, for example, as 294465600 + 96314596 = 17160^2 + 9814^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32736 + ... + 43048.

It is an arithmetic number, because the mean of its divisors is an integer number (57000321).

Almost surely, 2^390780196 is an apocalyptic number.

It is an amenable number.

390780196 is a deficient number, since it is larger than the sum of its proper divisors (293223656).

390780196 is a wasteful number, since it uses less digits than its factorization.

390780196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19790 (or 19788 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 390780196 is about 19768.1611689100. The cubic root of 390780196 is about 731.1012315180.

The spelling of 390780196 in words is "three hundred ninety million, seven hundred eighty thousand, one hundred ninety-six".