44391385 has 4 divisors (see below), whose sum is σ = 53269668. Its totient is φ = 35513104.

The previous prime is 44391377. The next prime is 44391409. The reversal of 44391385 is 58319344.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6310144 + 38081241 = 2512^2 + 6171^2 .

It is a cyclic number.

It is not a de Polignac number, because 44391385 - 2³ = 44391377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4439134 + ... + 4439143.

It is an arithmetic number, because the mean of its divisors is an integer number (13317417).

Almost surely, 2^44391385 is an apocalyptic number.

It is an amenable number.

44391385 is a deficient number, since it is larger than the sum of its proper divisors (8878283).

44391385 is an equidigital number, since it uses as much as digits as its factorization.

44391385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8878282.

The product of its digits is 51840, while the sum is 37.

The square root of 44391385 is about 6662.6860199172. The cubic root of 44391385 is about 354.0785067458.

The spelling of 44391385 in words is "forty-four million, three hundred ninety-one thousand, three hundred eighty-five".