44454221 has 6 divisors (see below), whose sum is σ = 51712110. Its totient is φ = 38103576.

The previous prime is 44454211. The next prime is 44454229. The reversal of 44454221 is 12245444.

It can be written as a sum of positive squares in only one way, i.e., 22458121 + 21996100 = 4739^2 + 4690^2 .

It is not a de Polignac number, because 44454221 - 2¹⁴ = 44437837 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 (44454229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453566 + ... + 453663.

It is an arithmetic number, because the mean of its divisors is an integer number (8618685).

Almost surely, 2^44454221 is an apocalyptic number.

It is an amenable number.

44454221 is a deficient number, since it is larger than the sum of its proper divisors (7257889).

44454221 is an equidigital number, since it uses as much as digits as its factorization.

44454221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907243 (or 907236 counting only the distinct ones).

The product of its digits is 5120, while the sum is 26.

The square root of 44454221 is about 6667.3998680145. The cubic root of 44454221 is about 354.2454940080.

Adding to 44454221 its reverse (12245444), we get a palindrome (56699665).

The spelling of 44454221 in words is "forty-four million, four hundred fifty-four thousand, two hundred twenty-one".