44449721 has 8 divisors (see below), whose sum is σ = 48403200. Its totient is φ = 40657680.

The previous prime is 44449703. The next prime is 44449729. The reversal of 44449721 is 12794444.

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 44449721 - 2²² = 40255417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44449729) 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, 39785 + ... + 40886.

It is an arithmetic number, because the mean of its divisors is an integer number (6050400).

Almost surely, 2^44449721 is an apocalyptic number.

It is an amenable number.

44449721 is a deficient number, since it is larger than the sum of its proper divisors (3953479).

44449721 is a wasteful number, since it uses less digits than its factorization.

44449721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80719.

The product of its digits is 32256, while the sum is 35.

The square root of 44449721 is about 6667.0623965882. The cubic root of 44449721 is about 354.2335404486.

The spelling of 44449721 in words is "forty-four million, four hundred forty-nine thousand, seven hundred twenty-one".