444664260 has 72 divisors (see below), whose sum is σ = 1368983616. Its totient is φ = 116804160.

The previous prime is 444664249. The next prime is 444664271. The reversal of 444664260 is 62466444.

It is a happy number.

444664260 is a `hidden beast` number, since 4 + 4 + 4 + 6 + 642 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (444664249) and next prime (444664271).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6376 + ... + 30495.

Almost surely, 2^444664260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444664260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684491808).

444664260 is an abundant number, since it is smaller than the sum of its proper divisors (924319356).

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

444664260 is a wasteful number, since it uses less digits than its factorization.

444664260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36953 (or 36948 counting only the distinct ones).

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

The square root of 444664260 is about 21087.0638069884. The cubic root of 444664260 is about 763.2686206314.

The spelling of 444664260 in words is "four hundred forty-four million, six hundred sixty-four thousand, two hundred sixty".