44431864 has 16 divisors (see below), whose sum is σ = 85342320. Its totient is φ = 21673920.

The previous prime is 44431847. The next prime is 44431867. The reversal of 44431864 is 46813444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44431867) 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, 67404 + ... + 68059.

It is an arithmetic number, because the mean of its divisors is an integer number (5333895).

Almost surely, 2^44431864 is an apocalyptic number.

It is an amenable number.

44431864 is a deficient number, since it is larger than the sum of its proper divisors (40910456).

44431864 is a wasteful number, since it uses less digits than its factorization.

44431864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135510 (or 135506 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 44431864 is about 6665.7230665547. The cubic root of 44431864 is about 354.1860981142.

The spelling of 44431864 in words is "forty-four million, four hundred thirty-one thousand, eight hundred sixty-four".