444013666 has 16 divisors (see below), whose sum is σ = 696739968. Its totient is φ = 211816000.

The previous prime is 444013543. The next prime is 444013681. The reversal of 444013666 is 666310444.

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, 6411 + ... + 30481.

It is an arithmetic number, because the mean of its divisors is an integer number (43546248).

Almost surely, 2^444013666 is an apocalyptic number.

444013666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

444013666 is a deficient number, since it is larger than the sum of its proper divisors (252726302).

444013666 is a wasteful number, since it uses less digits than its factorization.

444013666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24497.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 444013666 is about 21071.6317830395. The cubic root of 444013666 is about 762.8961895563.

The spelling of 444013666 in words is "four hundred forty-four million, thirteen thousand, six hundred sixty-six".