444466646 has 16 divisors (see below), whose sum is σ = 718446624. Its totient is φ = 205006464.

The previous prime is 444466613. The next prime is 444466657. The reversal of 444466646 is 646664444.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 444466597 and 444466606.

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, 44135 + ... + 53261.

It is an arithmetic number, because the mean of its divisors is an integer number (44902914).

Almost surely, 2^444466646 is an apocalyptic number.

444466646 is a deficient number, since it is larger than the sum of its proper divisors (273979978).

444466646 is a wasteful number, since it uses less digits than its factorization.

444466646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11015.

The product of its digits is 1327104, while the sum is 44.

The square root of 444466646 is about 21082.3776173372. The cubic root of 444466646 is about 763.1555353757.

The spelling of 444466646 in words is "four hundred forty-four million, four hundred sixty-six thousand, six hundred forty-six".