44003721 has 8 divisors (see below), whose sum is σ = 58857984. Its totient is φ = 29242640.

The previous prime is 44003719. The next prime is 44003737. The reversal of 44003721 is 12730044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44003721 - 2¹ = 44003719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44003521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22185 + ... + 24086.

It is an arithmetic number, because the mean of its divisors is an integer number (7357248).

Almost surely, 2^44003721 is an apocalyptic number.

It is an amenable number.

44003721 is a deficient number, since it is larger than the sum of its proper divisors (14854263).

44003721 is a wasteful number, since it uses less digits than its factorization.

44003721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46591.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 44003721 is about 6633.5300557094. The cubic root of 44003721 is about 353.0447850901.

Adding to 44003721 its reverse (12730044), we get a palindrome (56733765).

The spelling of 44003721 in words is "forty-four million, three thousand, seven hundred twenty-one".