390423415968 has 36 divisors (see below), whose sum is σ = 1110266589978. Its totient is φ = 130141138560.

The previous prime is 390423415961. The next prime is 390423415969. The reversal of 390423415968 is 869514324093.

390423415968 is a `hidden beast` number, since 3 + 9 + 0 + 4 + 2 + 3 + 41 + 596 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 374118169104 + 16305246864 = 611652^2 + 127692^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×390423415968² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (390423415961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 677818143 + ... + 677818718.

Almost surely, 2^390423415968 is an apocalyptic number.

It is an amenable number.

390423415968 is an abundant number, since it is smaller than the sum of its proper divisors (719843174010).

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

390423415968 is a wasteful number, since it uses less digits than its factorization.

390423415968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355636877 (or 1355636866 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 390423415968 in words is "three hundred ninety billion, four hundred twenty-three million, four hundred fifteen thousand, nine hundred sixty-eight".