749091923739 has 48 divisors (see below), whose sum is σ = 1146171686400. Its totient is φ = 470667008448.

The previous prime is 749091923683. The next prime is 749091923747. The reversal of 749091923739 is 937329190947.

749091923739 is a `hidden beast` number, since 7 + 4 + 90 + 91 + 92 + 373 + 9 = 666.

It is not a de Polignac number, because 749091923739 - 2⁹ = 749091923227 is a prime.

It is a super-2 number, since 2×749091923739² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (749091923539) 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 47 ways as a sum of consecutive naturals, for example, 4568632 + ... + 4729754.

It is an arithmetic number, because the mean of its divisors is an integer number (23878576800).

Almost surely, 2^749091923739 is an apocalyptic number.

749091923739 is a deficient number, since it is larger than the sum of its proper divisors (397079762661).

749091923739 is a wasteful number, since it uses less digits than its factorization.

749091923739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161584 (or 161581 counting only the distinct ones).

The product of its (nonzero) digits is 23147208, while the sum is 63.

The spelling of 749091923739 in words is "seven hundred forty-nine billion, ninety-one million, nine hundred twenty-three thousand, seven hundred thirty-nine".