44418621 has 16 divisors (see below), whose sum is σ = 65338560. Its totient is φ = 26666880.

The previous prime is 44418617. The next prime is 44418643. The reversal of 44418621 is 12681444.

It is not a de Polignac number, because 44418621 - 2² = 44418617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44418601) 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, 12291 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (4083660).

Almost surely, 2^44418621 is an apocalyptic number.

44418621 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

44418621 is a deficient number, since it is larger than the sum of its proper divisors (20919939).

44418621 is a wasteful number, since it uses less digits than its factorization.

44418621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27836.

The product of its digits is 6144, while the sum is 30.

The square root of 44418621 is about 6664.7296269241. The cubic root of 44418621 is about 354.1509060084.

The spelling of 44418621 in words is "forty-four million, four hundred eighteen thousand, six hundred twenty-one".