44426421 has 32 divisors (see below), whose sum is σ = 72414720. Its totient is φ = 26747712.

The previous prime is 44426407. The next prime is 44426429. The reversal of 44426421 is 12462444.

It is a happy number.

It is not a de Polignac number, because 44426421 - 2⁶ = 44426357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44426429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15151 + ... + 17843.

It is an arithmetic number, because the mean of its divisors is an integer number (2262960).

Almost surely, 2^44426421 is an apocalyptic number.

It is an amenable number.

44426421 is a deficient number, since it is larger than the sum of its proper divisors (27988299).

44426421 is a wasteful number, since it uses less digits than its factorization.

44426421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762 (or 2756 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 44426421 is about 6665.3147712617. The cubic root of 44426421 is about 354.1716346677.

Adding to 44426421 its reverse (12462444), we get a palindrome (56888865).

The spelling of 44426421 in words is "forty-four million, four hundred twenty-six thousand, four hundred twenty-one".