390631626390 has 32 divisors (see below), whose sum is σ = 939081081600. Its totient is φ = 103994525024.

The previous prime is 390631626383. The next prime is 390631626391. The reversal of 390631626390 is 93626136093.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390631626391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10851024 + ... + 10886963.

It is an arithmetic number, because the mean of its divisors is an integer number (29346283800).

Almost surely, 2^390631626390 is an apocalyptic number.

390631626390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390631626390 is an abundant number, since it is smaller than the sum of its proper divisors (548449455210).

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

390631626390 is a wasteful number, since it uses less digits than its factorization.

390631626390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21738596.

The product of its (nonzero) digits is 944784, while the sum is 48.

The spelling of 390631626390 in words is "three hundred ninety billion, six hundred thirty-one million, six hundred twenty-six thousand, three hundred ninety".