44322721 has 4 divisors (see below), whose sum is σ = 44516500. Its totient is φ = 44128944.

The previous prime is 44322709. The next prime is 44322731. The reversal of 44322721 is 12722344.

It is a happy number.

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 39237696 + 5085025 = 6264^2 + 2255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44322721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44322731) 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, 96546 + ... + 97003.

It is an arithmetic number, because the mean of its divisors is an integer number (11129125).

Almost surely, 2^44322721 is an apocalyptic number.

It is an amenable number.

44322721 is a deficient number, since it is larger than the sum of its proper divisors (193779).

44322721 is a wasteful number, since it uses less digits than its factorization.

44322721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193778.

The product of its digits is 2688, while the sum is 25.

The square root of 44322721 is about 6657.5311490071. The cubic root of 44322721 is about 353.8958512391.

The spelling of 44322721 in words is "forty-four million, three hundred twenty-two thousand, seven hundred twenty-one".