444774140 has 24 divisors (see below), whose sum is σ = 947969232. Its totient is φ = 175253760.

The previous prime is 444774137. The next prime is 444774157. The reversal of 444774140 is 41477444.

It is a super-2 number, since 2×444774140² = 395648071225479200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444774140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164621 + ... + 167300.

It is an arithmetic number, because the mean of its divisors is an integer number (39498718).

Almost surely, 2^444774140 is an apocalyptic number.

It is an amenable number.

444774140 is an abundant number, since it is smaller than the sum of its proper divisors (503195092).

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

444774140 is a wasteful number, since it uses less digits than its factorization.

444774140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331997 (or 331995 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 35.

The square root of 444774140 is about 21089.6690348616. The cubic root of 444774140 is about 763.3314853261.

It can be divided in two parts, 4447 and 74140, that added together give a palindrome (78587).

The spelling of 444774140 in words is "four hundred forty-four million, seven hundred seventy-four thousand, one hundred forty".