444907389 has 4 divisors (see below), whose sum is σ = 593209856. Its totient is φ = 296604924.

The previous prime is 444907339. The next prime is 444907399. The reversal of 444907389 is 983709444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 444907389 - 2⁷ = 444907261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444907339) 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, 74151229 + ... + 74151234.

It is an arithmetic number, because the mean of its divisors is an integer number (148302464).

Almost surely, 2^444907389 is an apocalyptic number.

It is an amenable number.

444907389 is a deficient number, since it is larger than the sum of its proper divisors (148302467).

444907389 is a wasteful number, since it uses less digits than its factorization.

444907389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148302466.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 444907389 is about 21092.8279042901. The cubic root of 444907389 is about 763.4077060355.

The spelling of 444907389 in words is "four hundred forty-four million, nine hundred seven thousand, three hundred eighty-nine".