491892959 has 8 divisors (see below), whose sum is σ = 501573552. Its totient is φ = 482264640.

The previous prime is 491892941. The next prime is 491892967. The reversal of 491892959 is 959298194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491892959 is a prime.

It is a super-2 number, since 2×491892959² = 483917366227551362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491892859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6212 + ... + 31974.

It is an arithmetic number, because the mean of its divisors is an integer number (62696694).

Almost surely, 2^491892959 is an apocalyptic number.

491892959 is a deficient number, since it is larger than the sum of its proper divisors (9680593).

491892959 is a wasteful number, since it uses less digits than its factorization.

491892959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26137.

The product of its digits is 2099520, while the sum is 56.

The square root of 491892959 is about 22178.6599910815. The cubic root of 491892959 is about 789.3874218248.

The spelling of 491892959 in words is "four hundred ninety-one million, eight hundred ninety-two thousand, nine hundred fifty-nine".