444026664 has 32 divisors (see below), whose sum is σ = 1233408000. Its totient is φ = 148008816.

The previous prime is 444026663. The next prime is 444026669. The reversal of 444026664 is 466620444.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (444026663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027624 + ... + 1028055.

It is an arithmetic number, because the mean of its divisors is an integer number (38544000).

Almost surely, 2^444026664 is an apocalyptic number.

It is an amenable number.

444026664 is an abundant number, since it is smaller than the sum of its proper divisors (789381336).

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

444026664 is a wasteful number, since it uses less digits than its factorization.

444026664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055694 (or 2055684 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 444026664 is about 21071.9402049266. The cubic root of 444026664 is about 762.9036337926.

The spelling of 444026664 in words is "four hundred forty-four million, twenty-six thousand, six hundred sixty-four".