44440621 has 4 divisors (see below), whose sum is σ = 44479744. Its totient is φ = 44401500.

The previous prime is 44440579. The next prime is 44440651. The reversal of 44440621 is 12604444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44440621 - 2⁷ = 44440493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44440651) 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, 17805 + ... + 20146.

It is an arithmetic number, because the mean of its divisors is an integer number (11119936).

Almost surely, 2^44440621 is an apocalyptic number.

It is an amenable number.

44440621 is a deficient number, since it is larger than the sum of its proper divisors (39123).

44440621 is a wasteful number, since it uses less digits than its factorization.

44440621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39122.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 44440621 is about 6666.3799021658. The cubic root of 44440621 is about 354.2093652296.

The spelling of 44440621 in words is "forty-four million, four hundred forty thousand, six hundred twenty-one".