744979939 has 24 divisors (see below), whose sum is σ = 845216064. Its totient is φ = 655776000.

The previous prime is 744979919. The next prime is 744979943. The reversal of 744979939 is 939979447.

It is not a de Polignac number, because 744979939 - 2²¹ = 742882787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (744979909) 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 23 ways as a sum of consecutive naturals, for example, 573739 + ... + 575035.

It is an arithmetic number, because the mean of its divisors is an integer number (35217336).

Almost surely, 2^744979939 is an apocalyptic number.

744979939 is a deficient number, since it is larger than the sum of its proper divisors (100236125).

744979939 is a wasteful number, since it uses less digits than its factorization.

744979939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1456 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 61.

The square root of 744979939 is about 27294.3206363522. The cubic root of 744979939 is about 906.5286331249.

The spelling of 744979939 in words is "seven hundred forty-four million, nine hundred seventy-nine thousand, nine hundred thirty-nine".