44569721 has 16 divisors (see below), whose sum is σ = 52116480. Its totient is φ = 37326480.

The previous prime is 44569717. The next prime is 44569727. The reversal of 44569721 is 12796544.

It is a cyclic number.

It is not a de Polignac number, because 44569721 - 2² = 44569717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44569727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128270 + ... + 128616.

It is an arithmetic number, because the mean of its divisors is an integer number (3257280).

Almost surely, 2^44569721 is an apocalyptic number.

It is an amenable number.

44569721 is a deficient number, since it is larger than the sum of its proper divisors (7546759).

44569721 is a wasteful number, since it uses less digits than its factorization.

44569721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 60480, while the sum is 38.

The square root of 44569721 is about 6676.0557966512. The cubic root of 44569721 is about 354.5520263580.

The spelling of 44569721 in words is "forty-four million, five hundred sixty-nine thousand, seven hundred twenty-one".