450709990388 has 48 divisors (see below), whose sum is σ = 930749912064. Its totient is φ = 186879813120.

The previous prime is 450709990349. The next prime is 450709990411. The reversal of 450709990388 is 883099907054.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 450709990388.

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, 3227420 + ... + 3364172.

It is an arithmetic number, because the mean of its divisors is an integer number (19390623168).

Almost surely, 2^450709990388 is an apocalyptic number.

It is an amenable number.

450709990388 is an abundant number, since it is smaller than the sum of its proper divisors (480039921676).

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

450709990388 is a wasteful number, since it uses less digits than its factorization.

450709990388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140592 (or 140590 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 450709990388 in words is "four hundred fifty billion, seven hundred nine million, nine hundred ninety thousand, three hundred eighty-eight".