491591344 has 40 divisors (see below), whose sum is σ = 975684080. Its totient is φ = 239874048.

The previous prime is 491591333. The next prime is 491591357. The reversal of 491591344 is 443195194.

It is a junction number, because it is equal to n+sod(n) for n = 491591297 and 491591306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111127 + ... + 115465.

It is an arithmetic number, because the mean of its divisors is an integer number (24392102).

Almost surely, 2^491591344 is an apocalyptic number.

It is an amenable number.

491591344 is a deficient number, since it is larger than the sum of its proper divisors (484092736).

491591344 is a wasteful number, since it uses less digits than its factorization.

491591344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517 (or 4511 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 491591344 is about 22171.8592815307. The cubic root of 491591344 is about 789.2260454094.

The spelling of 491591344 in words is "four hundred ninety-one million, five hundred ninety-one thousand, three hundred forty-four".