749444431 has 4 divisors (see below), whose sum is σ = 749951272. Its totient is φ = 748937592.

The previous prime is 749444429. The next prime is 749444441. The reversal of 749444431 is 134444947.

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 749444431 - 2¹ = 749444429 is a prime.

It is a super-2 number, since 2×749444431² = 1123333910313827522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749444401) 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, 251196 + ... + 254161.

It is an arithmetic number, because the mean of its divisors is an integer number (187487818).

Almost surely, 2^749444431 is an apocalyptic number.

749444431 is a deficient number, since it is larger than the sum of its proper divisors (506841).

749444431 is a wasteful number, since it uses less digits than its factorization.

749444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506840.

The product of its digits is 193536, while the sum is 40.

The square root of 749444431 is about 27375.9827403511. The cubic root of 749444431 is about 908.3358996944.

The spelling of 749444431 in words is "seven hundred forty-nine million, four hundred forty-four thousand, four hundred thirty-one".