44380721 has 12 divisors (see below), whose sum is σ = 56320560. Its totient is φ = 34581960.

The previous prime is 44380709. The next prime is 44380729. The reversal of 44380721 is 12708344.

It is not a de Polignac number, because 44380721 - 2¹⁰ = 44379697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44380729) 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 11 ways as a sum of consecutive naturals, for example, 40631 + ... + 41708.

It is an arithmetic number, because the mean of its divisors is an integer number (4693380).

Almost surely, 2^44380721 is an apocalyptic number.

It is an amenable number.

44380721 is a deficient number, since it is larger than the sum of its proper divisors (11939839).

44380721 is a wasteful number, since it uses less digits than its factorization.

44380721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82364 (or 82357 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 44380721 is about 6661.8856940059. The cubic root of 44380721 is about 354.0501514272.

The spelling of 44380721 in words is "forty-four million, three hundred eighty thousand, seven hundred twenty-one".