491039424 has 84 divisors (see below), whose sum is σ = 1490298264. Its totient is φ = 154048512.

The previous prime is 491039399. The next prime is 491039429. The reversal of 491039424 is 424930194.

It is a super-2 number, since 2×491039424² = 482239431844503552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (491039429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15282 + ... + 34865.

It is an arithmetic number, because the mean of its divisors is an integer number (17741646).

Almost surely, 2^491039424 is an apocalyptic number.

It is an amenable number.

491039424 is an abundant number, since it is smaller than the sum of its proper divisors (999258840).

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

491039424 is a wasteful number, since it uses less digits than its factorization.

491039424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50182 (or 50169 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 491039424 is about 22159.4093784108. The cubic root of 491039424 is about 788.9305745464.

The spelling of 491039424 in words is "four hundred ninety-one million, thirty-nine thousand, four hundred twenty-four".