497906990 has 32 divisors (see below), whose sum is σ = 1068802560. Its totient is φ = 163288224.

The previous prime is 497906971. The next prime is 497907023. The reversal of 497906990 is 99609794.

It is a super-2 number, since 2×497906990² = 495822741381720200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153020 + ... + 156239.

It is an arithmetic number, because the mean of its divisors is an integer number (33400080).

Almost surely, 2^497906990 is an apocalyptic number.

497906990 is an abundant number, since it is smaller than the sum of its proper divisors (570895570).

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

497906990 is a wasteful number, since it uses less digits than its factorization.

497906990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309296.

The product of its (nonzero) digits is 1102248, while the sum is 53.

The square root of 497906990 is about 22313.8295682297. The cubic root of 497906990 is about 792.5914949743.

The spelling of 497906990 in words is "four hundred ninety-seven million, nine hundred six thousand, nine hundred ninety".