491744994 has 32 divisors (see below), whose sum is σ = 1060081344. Its totient is φ = 151172160.

The previous prime is 491744983. The next prime is 491745011. The reversal of 491744994 is 499447194.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120532 + ... + 124544.

It is an arithmetic number, because the mean of its divisors is an integer number (33127542).

Almost surely, 2^491744994 is an apocalyptic number.

491744994 is an abundant number, since it is smaller than the sum of its proper divisors (568336350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491744994 is a wasteful number, since it uses less digits than its factorization.

491744994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602.

The product of its digits is 1306368, while the sum is 51.

The square root of 491744994 is about 22175.3239886140. The cubic root of 491744994 is about 789.3082627169.

The spelling of 491744994 in words is "four hundred ninety-one million, seven hundred forty-four thousand, nine hundred ninety-four".