450312891 has 24 divisors (see below), whose sum is σ = 699277824. Its totient is φ = 257014800.

The previous prime is 450312887. The next prime is 450312911. The reversal of 450312891 is 198213054.

It is not a de Polignac number, because 450312891 - 2² = 450312887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450312871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190366 + ... + 192716.

It is an arithmetic number, because the mean of its divisors is an integer number (29136576).

Almost surely, 2^450312891 is an apocalyptic number.

450312891 is a deficient number, since it is larger than the sum of its proper divisors (248964933).

450312891 is a wasteful number, since it uses less digits than its factorization.

450312891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 450312891 is about 21220.5770656691. The cubic root of 450312891 is about 766.4869996336.

The spelling of 450312891 in words is "four hundred fifty million, three hundred twelve thousand, eight hundred ninety-one".