444644001 has 24 divisors (see below), whose sum is σ = 655724160. Its totient is φ = 290257056.

The previous prime is 444643987. The next prime is 444644021. The reversal of 444644001 is 100446444.

It is not a de Polignac number, because 444644001 - 2⁹ = 444643489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444644021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145576 + ... + 148598.

It is an arithmetic number, because the mean of its divisors is an integer number (27321840).

Almost surely, 2^444644001 is an apocalyptic number.

It is an amenable number.

444644001 is a deficient number, since it is larger than the sum of its proper divisors (211080159).

444644001 is a wasteful number, since it uses less digits than its factorization.

444644001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 444644001 is about 21086.5834359196. The cubic root of 444644001 is about 763.2570288942.

The spelling of 444644001 in words is "four hundred forty-four million, six hundred forty-four thousand, one".