491533392 has 40 divisors (see below), whose sum is σ = 1451194816. Its totient is φ = 140438016.

The previous prime is 491533351. The next prime is 491533397. The reversal of 491533392 is 293335194.

It is a self number, because there is not a number n which added to its sum of digits gives 491533392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491533397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731113 + ... + 731784.

Almost surely, 2^491533392 is an apocalyptic number.

491533392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

491533392 is an abundant number, since it is smaller than the sum of its proper divisors (959661424).

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

491533392 is a wasteful number, since it uses less digits than its factorization.

491533392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462915 (or 1462909 counting only the distinct ones).

The product of its digits is 87480, while the sum is 39.

The square root of 491533392 is about 22170.5523611840. The cubic root of 491533392 is about 789.1950311495.

The spelling of 491533392 in words is "four hundred ninety-one million, five hundred thirty-three thousand, three hundred ninety-two".