450809091 has 32 divisors (see below), whose sum is σ = 680042240. Its totient is φ = 295099200.

The previous prime is 450809071. The next prime is 450809123. The reversal of 450809091 is 190908054.

It is not a de Polignac number, because 450809091 - 2¹⁸ = 450546947 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450809011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652056 + ... + 652746.

It is an arithmetic number, because the mean of its divisors is an integer number (21251320).

Almost surely, 2^450809091 is an apocalyptic number.

450809091 is a deficient number, since it is larger than the sum of its proper divisors (229233149).

450809091 is a wasteful number, since it uses less digits than its factorization.

450809091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 450809091 is about 21232.2653289751. The cubic root of 450809091 is about 766.7684270934.

The spelling of 450809091 in words is "four hundred fifty million, eight hundred nine thousand, ninety-one".