444390780 has 96 divisors (see below), whose sum is σ = 1297981440. Its totient is φ = 113460480.

The previous prime is 444390769. The next prime is 444390787. The reversal of 444390780 is 87093444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444390787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219975 + ... + 221985.

It is an arithmetic number, because the mean of its divisors is an integer number (13520640).

Almost surely, 2^444390780 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 444390780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648990720).

444390780 is an abundant number, since it is smaller than the sum of its proper divisors (853590660).

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

444390780 is a wasteful number, since it uses less digits than its factorization.

444390780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 444390780 is about 21080.5782653133. The cubic root of 444390780 is about 763.1121119056.

The spelling of 444390780 in words is "four hundred forty-four million, three hundred ninety thousand, seven hundred eighty".