3990367631 has 8 divisors (see below), whose sum is σ = 4259548800. Its totient is φ = 3727102680.

The previous prime is 3990367609. The next prime is 3990367663. The reversal of 3990367631 is 1367630993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3990367631 - 2¹⁰ = 3990366607 is a prime.

It is a super-2 number, since 2×3990367631² = 31846067661065104322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990367331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1477661 + ... + 1480358.

It is an arithmetic number, because the mean of its divisors is an integer number (532443600).

Almost surely, 2^3990367631 is an apocalyptic number.

3990367631 is a deficient number, since it is larger than the sum of its proper divisors (269181169).

3990367631 is a wasteful number, since it uses less digits than its factorization.

3990367631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958109.

The product of its (nonzero) digits is 551124, while the sum is 47.

The square root of 3990367631 is about 63169.3567404323. The cubic root of 3990367631 is about 1586.1258250748.

The spelling of 3990367631 in words is "three billion, nine hundred ninety million, three hundred sixty-seven thousand, six hundred thirty-one".