44444421 has 36 divisors (see below), whose sum is σ = 77111424. Its totient is φ = 24570000.

The previous prime is 44444399. The next prime is 44444453. The reversal of 44444421 is 12444444.

It is not a de Polignac number, because 44444421 - 2⁶ = 44444357 is a prime.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44444471) 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 35 ways as a sum of consecutive naturals, for example, 12046 + ... + 15296.

It is an arithmetic number, because the mean of its divisors is an integer number (2141984).

Almost surely, 2^44444421 is an apocalyptic number.

It is an amenable number.

44444421 is a deficient number, since it is larger than the sum of its proper divisors (32667003).

44444421 is a wasteful number, since it uses less digits than its factorization.

44444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302 (or 3292 counting only the distinct ones).

The product of its digits is 8192, while the sum is 27.

The square root of 44444421 is about 6666.6649083331. The cubic root of 44444421 is about 354.2194607773.

Adding to 44444421 its reverse (12444444), we get a palindrome (56888865).

The spelling of 44444421 in words is "forty-four million, four hundred forty-four thousand, four hundred twenty-one".