44289881 has 16 divisors (see below), whose sum is σ = 48117888. Its totient is φ = 40656000.

The previous prime is 44289877. The next prime is 44289887. The reversal of 44289881 is 18898244.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 44289881 - 2² = 44289877 is a prime.

It is a super-2 number, since 2×44289881² = 3923187117988322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44289887) 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, 62831 + ... + 63531.

It is an arithmetic number, because the mean of its divisors is an integer number (3007368).

Almost surely, 2^44289881 is an apocalyptic number.

44289881 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

44289881 is a deficient number, since it is larger than the sum of its proper divisors (3828007).

44289881 is a wasteful number, since it uses less digits than its factorization.

44289881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its digits is 147456, while the sum is 44.

The square root of 44289881 is about 6655.0643122362. The cubic root of 44289881 is about 353.8084257155.

The spelling of 44289881 in words is "forty-four million, two hundred eighty-nine thousand, eight hundred eighty-one".