445665144 has 64 divisors (see below), whose sum is σ = 1129392000. Its totient is φ = 146540160.

The previous prime is 445665091. The next prime is 445665151. The reversal of 445665144 is 441566544.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719667 + ... + 720285.

It is an arithmetic number, because the mean of its divisors is an integer number (17646750).

Almost surely, 2^445665144 is an apocalyptic number.

It is an amenable number.

445665144 is an abundant number, since it is smaller than the sum of its proper divisors (683726856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445665144 is a wasteful number, since it uses less digits than its factorization.

445665144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 984 counting only the distinct ones).

The product of its digits is 230400, while the sum is 39.

The square root of 445665144 is about 21110.7826477372. The cubic root of 445665144 is about 763.8408657715.

The spelling of 445665144 in words is "four hundred forty-five million, six hundred sixty-five thousand, one hundred forty-four".