44018881 has 4 divisors (see below), whose sum is σ = 44740564. Its totient is φ = 43297200.

The previous prime is 44018873. The next prime is 44018893. The reversal of 44018881 is 18881044.

It is a happy number.

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 577600 + 43441281 = 760^2 + 6591^2 .

It is a cyclic number.

It is not a de Polignac number, because 44018881 - 2³ = 44018873 is a prime.

It is a super-2 number, since 2×44018881² = 3875323768984322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44018981) 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, 360750 + ... + 360871.

It is an arithmetic number, because the mean of its divisors is an integer number (11185141).

Almost surely, 2^44018881 is an apocalyptic number.

It is an amenable number.

44018881 is a deficient number, since it is larger than the sum of its proper divisors (721683).

44018881 is an equidigital number, since it uses as much as digits as its factorization.

44018881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721682.

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 44018881 is about 6634.6726369882. The cubic root of 44018881 is about 353.0853236650.

It can be divided in two parts, 440 and 18881, that added together give a square (19321 = 139²).

The spelling of 44018881 in words is "forty-four million, eighteen thousand, eight hundred eighty-one".