44398881 has 16 divisors (see below), whose sum is σ = 65880000. Its totient is φ = 29552544.

The previous prime is 44398867. The next prime is 44398889. The reversal of 44398881 is 18889344.

It is not a de Polignac number, because 44398881 - 2¹⁷ = 44267809 is a prime.

It is a super-2 number, since 2×44398881² = 3942521268104322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44398889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28870 + ... + 30368.

It is an arithmetic number, because the mean of its divisors is an integer number (4117500).

Almost surely, 2^44398881 is an apocalyptic number.

It is an amenable number.

44398881 is a deficient number, since it is larger than the sum of its proper divisors (21481119).

44398881 is a wasteful number, since it uses less digits than its factorization.

44398881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605 (or 2599 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 44398881 is about 6663.2485320600. The cubic root of 44398881 is about 354.0984357111.

The spelling of 44398881 in words is "forty-four million, three hundred ninety-eight thousand, eight hundred eighty-one".