445426623 has 6 divisors (see below), whose sum is σ = 643394024. Its totient is φ = 296951076.

The previous prime is 445426603. The next prime is 445426627. The reversal of 445426623 is 326624544.

445426623 is a `hidden beast` number, since 4 + 4 + 5 + 4 + 26 + 623 = 666.

It is not a de Polignac number, because 445426623 - 2⁶ = 445426559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445426627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24745915 + ... + 24745932.

Almost surely, 2^445426623 is an apocalyptic number.

445426623 is a deficient number, since it is larger than the sum of its proper divisors (197967401).

445426623 is a wasteful number, since it uses less digits than its factorization.

445426623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49491853 (or 49491850 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 445426623 is about 21105.1326221846. The cubic root of 445426623 is about 763.7045716634.

The spelling of 445426623 in words is "four hundred forty-five million, four hundred twenty-six thousand, six hundred twenty-three".