444466643 has 4 divisors (see below), whose sum is σ = 445983888. Its totient is φ = 442949400.

The previous prime is 444466613. The next prime is 444466657. The reversal of 444466643 is 346664444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 444466643 - 2⁶ = 444466579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444466643.

It is not an unprimeable number, because it can be changed into a prime (444466613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758183 + ... + 758768.

It is an arithmetic number, because the mean of its divisors is an integer number (111495972).

Almost surely, 2^444466643 is an apocalyptic number.

444466643 is a deficient number, since it is larger than the sum of its proper divisors (1517245).

444466643 is a wasteful number, since it uses less digits than its factorization.

444466643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517244.

The product of its digits is 663552, while the sum is 41.

The square root of 444466643 is about 21082.3775461877. The cubic root of 444466643 is about 763.1555336587.

The spelling of 444466643 in words is "four hundred forty-four million, four hundred sixty-six thousand, six hundred forty-three".