749915791 has 4 divisors (see below), whose sum is σ = 761108632. Its totient is φ = 738722952.

The previous prime is 749915753. The next prime is 749915801. The reversal of 749915791 is 197519947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197519947 = 331 ⋅596737.

It is a cyclic number.

It is not a de Polignac number, because 749915791 - 2¹⁵ = 749883023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749918791) 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 3 ways as a sum of consecutive naturals, for example, 5596320 + ... + 5596453.

It is an arithmetic number, because the mean of its divisors is an integer number (190277158).

Almost surely, 2^749915791 is an apocalyptic number.

749915791 is a deficient number, since it is larger than the sum of its proper divisors (11192841).

749915791 is a wasteful number, since it uses less digits than its factorization.

749915791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192840.

The product of its digits is 714420, while the sum is 52.

The square root of 749915791 is about 27384.5903931390. The cubic root of 749915791 is about 908.5262911638.

The spelling of 749915791 in words is "seven hundred forty-nine million, nine hundred fifteen thousand, seven hundred ninety-one".