44429221 has 2 divisors, whose sum is σ = 44429222. Its totient is φ = 44429220.

The previous prime is 44429159. The next prime is 44429233. The reversal of 44429221 is 12292444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 14025025 = 5514^2 + 3745^2 .

It is a cyclic number.

It is not a de Polignac number, because 44429221 - 2⁷ = 44429093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44429221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44429251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22214610 + 22214611.

It is an arithmetic number, because the mean of its divisors is an integer number (22214611).

Almost surely, 2^44429221 is an apocalyptic number.

It is an amenable number.

44429221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44429221 is an equidigital number, since it uses as much as digits as its factorization.

44429221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 44429221 is about 6665.5248105457. The cubic root of 44429221 is about 354.1790751331.

The spelling of 44429221 in words is "forty-four million, four hundred twenty-nine thousand, two hundred twenty-one".