44421613 has 2 divisors, whose sum is σ = 44421614. Its totient is φ = 44421612.

The previous prime is 44421607. The next prime is 44421617. The reversal of 44421613 is 31612444.

44421613 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42536484 + 1885129 = 6522^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 44421613 - 2¹⁷ = 44290541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44421617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22210806 + 22210807.

It is an arithmetic number, because the mean of its divisors is an integer number (22210807).

Almost surely, 2^44421613 is an apocalyptic number.

It is an amenable number.

44421613 is a deficient number, since it is larger than the sum of its proper divisors (1).

44421613 is an equidigital number, since it uses as much as digits as its factorization.

44421613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 44421613 is about 6664.9540883640. The cubic root of 44421613 is about 354.1588575964.

The spelling of 44421613 in words is "forty-four million, four hundred twenty-one thousand, six hundred thirteen".