44109621 has 48 divisors (see below), whose sum is σ = 70986240. Its totient is φ = 26282880.

The previous prime is 44109619. The next prime is 44109631. The reversal of 44109621 is 12690144.

It is not a de Polignac number, because 44109621 - 2¹ = 44109619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44109631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280875 + ... + 281031.

It is an arithmetic number, because the mean of its divisors is an integer number (1478880).

Almost surely, 2^44109621 is an apocalyptic number.

It is an amenable number.

44109621 is a deficient number, since it is larger than the sum of its proper divisors (26876619).

44109621 is a wasteful number, since it uses less digits than its factorization.

44109621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 44109621 is about 6641.5074343104. The cubic root of 44109621 is about 353.3277724492.

Adding to 44109621 its reverse (12690144), we get a palindrome (56799765).

The spelling of 44109621 in words is "forty-four million, one hundred nine thousand, six hundred twenty-one".