44421321 has 8 divisors (see below), whose sum is σ = 67689664. Its totient is φ = 25383600.

The previous prime is 44421287. The next prime is 44421347. The reversal of 44421321 is 12312444.

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

It is not a de Polignac number, because 44421321 - 2⁹ = 44420809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2115301 = 44421321 / (4 + 4 + 4 + 2 + 1 + 3 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (44421121) 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, 1057630 + ... + 1057671.

It is an arithmetic number, because the mean of its divisors is an integer number (8461208).

Almost surely, 2^44421321 is an apocalyptic number.

It is an amenable number.

44421321 is a deficient number, since it is larger than the sum of its proper divisors (23268343).

44421321 is a wasteful number, since it uses less digits than its factorization.

44421321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115311.

The product of its digits is 768, while the sum is 21.

The square root of 44421321 is about 6664.9321827007. The cubic root of 44421321 is about 354.1580815881.

Adding to 44421321 its reverse (12312444), we get a palindrome (56733765).

The spelling of 44421321 in words is "forty-four million, four hundred twenty-one thousand, three hundred twenty-one".