444343749889 has 16 divisors (see below), whose sum is σ = 486772908160. Its totient is φ = 403120903680.

The previous prime is 444343749851. The next prime is 444343749919. The reversal of 444343749889 is 988947343444.

It is a cyclic number.

It is not a de Polignac number, because 444343749889 - 2³⁷ = 306904796417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444373749889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198672 + ... + 963409.

It is an arithmetic number, because the mean of its divisors is an integer number (30423306760).

Almost surely, 2^444343749889 is an apocalyptic number.

It is an amenable number.

444343749889 is a deficient number, since it is larger than the sum of its proper divisors (42429158271).

444343749889 is a wasteful number, since it uses less digits than its factorization.

444343749889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162600.

The product of its digits is 334430208, while the sum is 67.

The spelling of 444343749889 in words is "four hundred forty-four billion, three hundred forty-three million, seven hundred forty-nine thousand, eight hundred eighty-nine".