492640887 has 16 divisors (see below), whose sum is σ = 700001280. Its totient is φ = 307461792.

The previous prime is 492640879. The next prime is 492640891. The reversal of 492640887 is 788046294.

It is not a de Polignac number, because 492640887 - 2³ = 492640879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492640867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72712 + ... + 79197.

It is an arithmetic number, because the mean of its divisors is an integer number (43750080).

Almost surely, 2^492640887 is an apocalyptic number.

492640887 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

492640887 is a deficient number, since it is larger than the sum of its proper divisors (207360393).

492640887 is a wasteful number, since it uses less digits than its factorization.

492640887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151982.

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 492640887 is about 22195.5150199314. The cubic root of 492640887 is about 789.7873096178.

The spelling of 492640887 in words is "four hundred ninety-two million, six hundred forty thousand, eight hundred eighty-seven".