445244913 has 6 divisors (see below), whose sum is σ = 643131554. Its totient is φ = 296829936.

The previous prime is 445244911. The next prime is 445244927. The reversal of 445244913 is 319442544.

445244913 is a `hidden beast` number, since 44 + 524 + 4 + 91 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 412617969 + 32626944 = 20313^2 + 5712^2 .

It is not a de Polignac number, because 445244913 - 2¹ = 445244911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445244911) 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, 24735820 + ... + 24735837.

Almost surely, 2^445244913 is an apocalyptic number.

It is an amenable number.

445244913 is a deficient number, since it is larger than the sum of its proper divisors (197886641).

445244913 is a wasteful number, since it uses less digits than its factorization.

445244913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49471663 (or 49471660 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 445244913 is about 21100.8273060560. The cubic root of 445244913 is about 763.6007074686.

The spelling of 445244913 in words is "four hundred forty-five million, two hundred forty-four thousand, nine hundred thirteen".