12944899431 has 12 divisors (see below), whose sum is σ = 19301355840. Its totient is φ = 8351547840.

The previous prime is 12944899427. The next prime is 12944899459. The reversal of 12944899431 is 13499844921.

12944899431 is a `hidden beast` number, since 129 + 4 + 4 + 89 + 9 + 431 = 666.

It is not a de Polignac number, because 12944899431 - 2² = 12944899427 is a prime.

It is a super-2 number, since 2×12944899431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12944899411) 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 11 ways as a sum of consecutive naturals, for example, 23198466 + ... + 23199023.

It is an arithmetic number, because the mean of its divisors is an integer number (1608446320).

Almost surely, 2^12944899431 is an apocalyptic number.

12944899431 is a deficient number, since it is larger than the sum of its proper divisors (6356456409).

12944899431 is a wasteful number, since it uses less digits than its factorization.

12944899431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46397526 (or 46397523 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 12944899431 in words is "twelve billion, nine hundred forty-four million, eight hundred ninety-nine thousand, four hundred thirty-one".