44644421 has 4 divisors (see below), whose sum is σ = 44692512. Its totient is φ = 44596332.

The previous prime is 44644417. The next prime is 44644441. The reversal of 44644421 is 12444644.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44644421 - 2² = 44644417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44644441) 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 3 ways as a sum of consecutive naturals, for example, 22625 + ... + 24518.

It is an arithmetic number, because the mean of its divisors is an integer number (11173128).

Almost surely, 2^44644421 is an apocalyptic number.

It is an amenable number.

44644421 is a deficient number, since it is larger than the sum of its proper divisors (48091).

44644421 is an equidigital number, since it uses as much as digits as its factorization.

44644421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48090.

The product of its digits is 12288, while the sum is 29.

The square root of 44644421 is about 6681.6480751383. The cubic root of 44644421 is about 354.7499952406.

The spelling of 44644421 in words is "forty-four million, six hundred forty-four thousand, four hundred twenty-one".