44256991 has 4 divisors (see below), whose sum is σ = 46181232. Its totient is φ = 42332752.

The previous prime is 44256983. The next prime is 44256997. The reversal of 44256991 is 19965244.

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

It is a cyclic number.

It is not a de Polignac number, because 44256991 - 2³ = 44256983 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 (44256997) 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, 962086 + ... + 962131.

It is an arithmetic number, because the mean of its divisors is an integer number (11545308).

Almost surely, 2^44256991 is an apocalyptic number.

44256991 is a deficient number, since it is larger than the sum of its proper divisors (1924241).

44256991 is a wasteful number, since it uses less digits than its factorization.

44256991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924240.

The product of its digits is 77760, while the sum is 40.

The square root of 44256991 is about 6652.5928028100. The cubic root of 44256991 is about 353.7208237579.

The spelling of 44256991 in words is "forty-four million, two hundred fifty-six thousand, nine hundred ninety-one".