744434813 has 4 divisors (see below), whose sum is σ = 776801568. Its totient is φ = 712068060.

The previous prime is 744434809. The next prime is 744434819. The reversal of 744434813 is 318434447.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 318434447 = 47 ⋅6775201.

It is a cyclic number.

It is not a de Polignac number, because 744434813 - 2² = 744434809 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 (744434819) 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, 16183343 + ... + 16183388.

It is an arithmetic number, because the mean of its divisors is an integer number (194200392).

Almost surely, 2^744434813 is an apocalyptic number.

It is an amenable number.

744434813 is a deficient number, since it is larger than the sum of its proper divisors (32366755).

744434813 is a wasteful number, since it uses less digits than its factorization.

744434813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32366754.

The product of its digits is 129024, while the sum is 38.

The square root of 744434813 is about 27284.3327387715. The cubic root of 744434813 is about 906.3074670304.

The spelling of 744434813 in words is "seven hundred forty-four million, four hundred thirty-four thousand, eight hundred thirteen".