445425909 has 16 divisors (see below), whose sum is σ = 607936512. Its totient is φ = 289962288.

The previous prime is 445425899. The next prime is 445425919. The reversal of 445425909 is 909524544.

It is an interprime number because it is at equal distance from previous prime (445425899) and next prime (445425919).

It is not a de Polignac number, because 445425909 - 2⁷ = 445425781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445425919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61872 + ... + 68694.

It is an arithmetic number, because the mean of its divisors is an integer number (37996032).

Almost surely, 2^445425909 is an apocalyptic number.

It is an amenable number.

445425909 is a deficient number, since it is larger than the sum of its proper divisors (162510603).

445425909 is a wasteful number, since it uses less digits than its factorization.

445425909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7336.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 445425909 is about 21105.1157068612. The cubic root of 445425909 is about 763.7041636011.

The spelling of 445425909 in words is "four hundred forty-five million, four hundred twenty-five thousand, nine hundred nine".