749279823 has 4 divisors (see below), whose sum is σ = 999039768. Its totient is φ = 499519880.

The previous prime is 749279819. The next prime is 749279849. The reversal of 749279823 is 328972947.

749279823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 749279823 - 2² = 749279819 is a prime.

It is a super-2 number, since 2×749279823² = 1122840506309822658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749279893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124879968 + ... + 124879973.

It is an arithmetic number, because the mean of its divisors is an integer number (249759942).

Almost surely, 2^749279823 is an apocalyptic number.

749279823 is a deficient number, since it is larger than the sum of its proper divisors (249759945).

749279823 is a wasteful number, since it uses less digits than its factorization.

749279823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249759944.

The product of its digits is 1524096, while the sum is 51.

The square root of 749279823 is about 27372.9761443654. The cubic root of 749279823 is about 908.2693925158.

The spelling of 749279823 in words is "seven hundred forty-nine million, two hundred seventy-nine thousand, eight hundred twenty-three".