490171992 has 16 divisors (see below), whose sum is σ = 1225430040. Its totient is φ = 163390656.

The previous prime is 490171973. The next prime is 490172003. The reversal of 490171992 is 299171094.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10211893 + ... + 10211940.

Almost surely, 2^490171992 is an apocalyptic number.

It is an amenable number.

490171992 is an abundant number, since it is smaller than the sum of its proper divisors (735258048).

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

490171992 is a wasteful number, since it uses less digits than its factorization.

490171992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423842 (or 20423838 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 490171992 is about 22139.8281836152. The cubic root of 490171992 is about 788.4657462944.

The spelling of 490171992 in words is "four hundred ninety million, one hundred seventy-one thousand, nine hundred ninety-two".