390854891504 has 80 divisors (see below), whose sum is σ = 944426386176. Its totient is φ = 152235417600.

The previous prime is 390854891503. The next prime is 390854891573. The reversal of 390854891504 is 405198458093.

It is a super-2 number, since 2×390854891504² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 390854891504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390854891503) 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 15 ways as a sum of consecutive naturals, for example, 4213139 + ... + 4304909.

Almost surely, 2^390854891504 is an apocalyptic number.

It is an amenable number.

390854891504 is an abundant number, since it is smaller than the sum of its proper divisors (553571494672).

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

390854891504 is a wasteful number, since it uses less digits than its factorization.

390854891504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95254 (or 95248 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 390854891504 in words is "three hundred ninety billion, eight hundred fifty-four million, eight hundred ninety-one thousand, five hundred four".