450621906 has 16 divisors (see below), whose sum is σ = 1029993024. Its totient is φ = 128749104.

The previous prime is 450621893. The next prime is 450621931. The reversal of 450621906 is 609126054.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5364505 + ... + 5364588.

It is an arithmetic number, because the mean of its divisors is an integer number (64374564).

Almost surely, 2^450621906 is an apocalyptic number.

450621906 is an abundant number, since it is smaller than the sum of its proper divisors (579371118).

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

450621906 is a wasteful number, since it uses less digits than its factorization.

450621906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729105.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 450621906 is about 21227.8568395399. The cubic root of 450621906 is about 766.6622865114.

The spelling of 450621906 in words is "four hundred fifty million, six hundred twenty-one thousand, nine hundred six".