390383912 has 8 divisors (see below), whose sum is σ = 731969850. Its totient is φ = 195191952.

The previous prime is 390383911. The next prime is 390383923. The reversal of 390383912 is 219383093.

It can be written as a sum of positive squares in only one way, i.e., 285812836 + 104571076 = 16906^2 + 10226^2 .

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

It is not an unprimeable number, because it can be changed into a prime (390383911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24398987 + ... + 24399002.

Almost surely, 2^390383912 is an apocalyptic number.

It is an amenable number.

390383912 is a deficient number, since it is larger than the sum of its proper divisors (341585938).

390383912 is a wasteful number, since it uses less digits than its factorization.

390383912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48797995 (or 48797991 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 390383912 is about 19758.1353371213. The cubic root of 390383912 is about 730.8540152112.

The spelling of 390383912 in words is "three hundred ninety million, three hundred eighty-three thousand, nine hundred twelve".