744293731 has 4 divisors (see below), whose sum is σ = 776654352. Its totient is φ = 711933112.

The previous prime is 744293723. The next prime is 744293741. The reversal of 744293731 is 137392447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137392447 = 569 ⋅241463.

It is a cyclic number.

It is not a de Polignac number, because 744293731 - 2³ = 744293723 is a prime.

It is a super-2 number, since 2×744293731² = 1107946316011800722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744293741) 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, 16180276 + ... + 16180321.

It is an arithmetic number, because the mean of its divisors is an integer number (194163588).

Almost surely, 2^744293731 is an apocalyptic number.

744293731 is a deficient number, since it is larger than the sum of its proper divisors (32360621).

744293731 is a wasteful number, since it uses less digits than its factorization.

744293731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32360620.

The product of its digits is 127008, while the sum is 40.

The square root of 744293731 is about 27281.7472131094. The cubic root of 744293731 is about 906.2502102829.

The spelling of 744293731 in words is "seven hundred forty-four million, two hundred ninety-three thousand, seven hundred thirty-one".