44389691 has 4 divisors (see below), whose sum is σ = 45920400. Its totient is φ = 42858984.

The previous prime is 44389687. The next prime is 44389727. The reversal of 44389691 is 19698344.

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

It is not a de Polignac number, because 44389691 - 2² = 44389687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44389651) 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, 765311 + ... + 765368.

It is an arithmetic number, because the mean of its divisors is an integer number (11480100).

Almost surely, 2^44389691 is an apocalyptic number.

44389691 is a deficient number, since it is larger than the sum of its proper divisors (1530709).

44389691 is a wasteful number, since it uses less digits than its factorization.

44389691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530708.

The product of its digits is 186624, while the sum is 44.

The square root of 44389691 is about 6662.5588927979. The cubic root of 44389691 is about 354.0740027441.

The spelling of 44389691 in words is "forty-four million, three hundred eighty-nine thousand, six hundred ninety-one".