744079891 has 8 divisors (see below), whose sum is σ = 758760464. Its totient is φ = 729479520.

The previous prime is 744079873. The next prime is 744079913. The reversal of 744079891 is 198970447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 744079891 - 2⁵ = 744079859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744079871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140 + ... + 38593.

It is an arithmetic number, because the mean of its divisors is an integer number (94845058).

Almost surely, 2^744079891 is an apocalyptic number.

744079891 is a deficient number, since it is larger than the sum of its proper divisors (14680573).

744079891 is a wasteful number, since it uses less digits than its factorization.

744079891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40101.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 744079891 is about 27277.8278277432. The cubic root of 744079891 is about 906.1634116177.

The spelling of 744079891 in words is "seven hundred forty-four million, seventy-nine thousand, eight hundred ninety-one".