44350021 has 4 divisors (see below), whose sum is σ = 44399200. Its totient is φ = 44300844.

The previous prime is 44350001. The next prime is 44350039. The reversal of 44350021 is 12005344.

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 44350021 - 2¹¹ = 44347973 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 (44350001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23211 + ... + 25048.

It is an arithmetic number, because the mean of its divisors is an integer number (11099800).

Almost surely, 2^44350021 is an apocalyptic number.

It is an amenable number.

44350021 is a deficient number, since it is larger than the sum of its proper divisors (49179).

44350021 is an equidigital number, since it uses as much as digits as its factorization.

44350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49178.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 44350021 is about 6659.5811429849. The cubic root of 44350021 is about 353.9684954993.

Adding to 44350021 its reverse (12005344), we get a palindrome (56355365).

The spelling of 44350021 in words is "forty-four million, three hundred fifty thousand, twenty-one".