491793492 has 96 divisors (see below), whose sum is σ = 1255434880. Its totient is φ = 149299200.

The previous prime is 491793487. The next prime is 491793553. The reversal of 491793492 is 294397194.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817992 + ... + 818592.

Almost surely, 2^491793492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491793492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627717440).

491793492 is an abundant number, since it is smaller than the sum of its proper divisors (763641388).

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

491793492 is a wasteful number, since it uses less digits than its factorization.

491793492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 759 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 491793492 is about 22176.4174744254. The cubic root of 491793492 is about 789.3342101858.

The spelling of 491793492 in words is "four hundred ninety-one million, seven hundred ninety-three thousand, four hundred ninety-two".