444663760 has 20 divisors (see below), whose sum is σ = 1033843428. Its totient is φ = 177865472.

The previous prime is 444663733. The next prime is 444663767. The reversal of 444663760 is 67366444.

It can be written as a sum of positive squares in 2 ways, for example, as 78783376 + 365880384 = 8876^2 + 19128^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444663767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779069 + ... + 2779228.

Almost surely, 2^444663760 is an apocalyptic number.

444663760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444663760 is an abundant number, since it is smaller than the sum of its proper divisors (589179668).

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

444663760 is a wasteful number, since it uses less digits than its factorization.

444663760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558310 (or 5558304 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 40.

The square root of 444663760 is about 21087.0519513753. The cubic root of 444663760 is about 763.2683345471.

The spelling of 444663760 in words is "four hundred forty-four million, six hundred sixty-three thousand, seven hundred sixty".