44422721 has 16 divisors (see below), whose sum is σ = 53695488. Its totient is φ = 35942400.

The previous prime is 44422699. The next prime is 44422723. The reversal of 44422721 is 12722444.

It is a cyclic number.

It is not a de Polignac number, because 44422721 - 2²² = 40228417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44422723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6401 + ... + 11393.

It is an arithmetic number, because the mean of its divisors is an integer number (3355968).

Almost surely, 2^44422721 is an apocalyptic number.

44422721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

44422721 is a deficient number, since it is larger than the sum of its proper divisors (9272767).

44422721 is a wasteful number, since it uses less digits than its factorization.

44422721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072.

The product of its digits is 3584, while the sum is 26.

The square root of 44422721 is about 6665.0372091985. The cubic root of 44422721 is about 354.1618021446.

The spelling of 44422721 in words is "forty-four million, four hundred twenty-two thousand, seven hundred twenty-one".