3964981431 has 12 divisors (see below), whose sum is σ = 5526491768. Its totient is φ = 2528392944.

The previous prime is 3964981393. The next prime is 3964981459. The reversal of 3964981431 is 1341894693.

It is not a de Polignac number, because 3964981431 - 2⁷ = 3964981303 is a prime.

It is a super-2 number, since 2×3964981431² = 31442155496349615522, 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 (3964981331) 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 11 ways as a sum of consecutive naturals, for example, 1247620 + ... + 1250793.

Almost surely, 2^3964981431 is an apocalyptic number.

3964981431 is a deficient number, since it is larger than the sum of its proper divisors (1561510337).

3964981431 is a wasteful number, since it uses less digits than its factorization.

3964981431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498462 (or 2498439 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 3964981431 is about 62968.0985182179. The cubic root of 3964981431 is about 1582.7550914624.

The spelling of 3964981431 in words is "three billion, nine hundred sixty-four million, nine hundred eighty-one thousand, four hundred thirty-one".