445453444 has 6 divisors (see below), whose sum is σ = 779543534. Its totient is φ = 222726720.

The previous prime is 445453441. The next prime is 445453507. The reversal of 445453444 is 444354544.

It can be written as a sum of positive squares in only one way, i.e., 422795844 + 22657600 = 20562^2 + 4760^2 .

It is a super-2 number, since 2×445453444² = 396857541542922272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445453441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55681677 + ... + 55681684.

Almost surely, 2^445453444 is an apocalyptic number.

It is an amenable number.

445453444 is a deficient number, since it is larger than the sum of its proper divisors (334090090).

445453444 is a wasteful number, since it uses less digits than its factorization.

445453444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111363365 (or 111363363 counting only the distinct ones).

The product of its digits is 307200, while the sum is 37.

The square root of 445453444 is about 21105.7680267741. The cubic root of 445453444 is about 763.7198999712.

The spelling of 445453444 in words is "four hundred forty-five million, four hundred fifty-three thousand, four hundred forty-four".