495508986 has 72 divisors (see below), whose sum is σ = 1242075744. Its totient is φ = 139851360.

The previous prime is 495508969. The next prime is 495508997. The reversal of 495508986 is 689805594.

It is a happy number.

495508986 is a `hidden beast` number, since 4 + 9 + 550 + 8 + 9 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1496841 + ... + 1497171.

It is an arithmetic number, because the mean of its divisors is an integer number (17251052).

Almost surely, 2^495508986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495508986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621037872).

495508986 is an abundant number, since it is smaller than the sum of its proper divisors (746566758).

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

495508986 is a wasteful number, since it uses less digits than its factorization.

495508986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 495508986 is about 22260.0311320537. The cubic root of 495508986 is about 791.3170286800.

The spelling of 495508986 in words is "four hundred ninety-five million, five hundred eight thousand, nine hundred eighty-six".