491441772 has 24 divisors (see below), whose sum is σ = 1186239600. Its totient is φ = 158165056.

The previous prime is 491441761. The next prime is 491441773. The reversal of 491441772 is 277144194.

It is a self number, because there is not a number n which added to its sum of digits gives 491441772.

It is not an unprimeable number, because it can be changed into a prime (491441773) 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, 705747 + ... + 706442.

It is an arithmetic number, because the mean of its divisors is an integer number (49426650).

Almost surely, 2^491441772 is an apocalyptic number.

It is an amenable number.

491441772 is an abundant number, since it is smaller than the sum of its proper divisors (694797828).

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

491441772 is a wasteful number, since it uses less digits than its factorization.

491441772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412225 (or 1412223 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 491441772 is about 22168.4860105511. The cubic root of 491441772 is about 789.1459937610.

The spelling of 491441772 in words is "four hundred ninety-one million, four hundred forty-one thousand, seven hundred seventy-two".