44840881 has 4 divisors (see below), whose sum is σ = 44917092. Its totient is φ = 44764672.

The previous prime is 44840863. The next prime is 44840897. The reversal of 44840881 is 18804844.

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 19439281 + 25401600 = 4409^2 + 5040^2 .

It is a cyclic number.

It is not a de Polignac number, because 44840881 - 2¹⁹ = 44316593 is a prime.

It is a super-2 number, since 2×44840881² = 4021409217712322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44840881.

It is not an unprimeable number, because it can be changed into a prime (44840801) 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, 37216 + ... + 38401.

It is an arithmetic number, because the mean of its divisors is an integer number (11229273).

Almost surely, 2^44840881 is an apocalyptic number.

It is an amenable number.

44840881 is a deficient number, since it is larger than the sum of its proper divisors (76211).

44840881 is an equidigital number, since it uses as much as digits as its factorization.

44840881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76210.

The product of its (nonzero) digits is 32768, while the sum is 37.

The square root of 44840881 is about 6696.3333997046. Note that the first 4 decimals coincide. The cubic root of 44840881 is about 355.2695988163.

The spelling of 44840881 in words is "forty-four million, eight hundred forty thousand, eight hundred eighty-one".