454861990 has 48 divisors (see below), whose sum is σ = 903725424. Its totient is φ = 164711360.

The previous prime is 454861973. The next prime is 454862027. The reversal of 454861990 is 99168454.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 454861990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353889 + ... + 355171.

It is an arithmetic number, because the mean of its divisors is an integer number (18827613).

Almost surely, 2^454861990 is an apocalyptic number.

454861990 is a deficient number, since it is larger than the sum of its proper divisors (448863434).

454861990 is a wasteful number, since it uses less digits than its factorization.

454861990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 454861990 is about 21327.4937580579. The cubic root of 454861990 is about 769.0593956771.

The spelling of 454861990 in words is "four hundred fifty-four million, eight hundred sixty-one thousand, nine hundred ninety".