44312391 has 6 divisors (see below), whose sum is σ = 64006800. Its totient is φ = 29541588.

The previous prime is 44312327. The next prime is 44312407. The reversal of 44312391 is 19321344.

It is not a de Polignac number, because 44312391 - 2⁶ = 44312327 is a prime.

It is a super-2 number, since 2×44312391² = 3927175992273762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44312491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2461791 + ... + 2461808.

It is an arithmetic number, because the mean of its divisors is an integer number (10667800).

Almost surely, 2^44312391 is an apocalyptic number.

44312391 is a deficient number, since it is larger than the sum of its proper divisors (19694409).

44312391 is a wasteful number, since it uses less digits than its factorization.

44312391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923605 (or 4923602 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 44312391 is about 6656.7552906803. The cubic root of 44312391 is about 353.8683557236.

The spelling of 44312391 in words is "forty-four million, three hundred twelve thousand, three hundred ninety-one".