44742809 has 2 divisors, whose sum is σ = 44742810. Its totient is φ = 44742808.

The previous prime is 44742791. The next prime is 44742821. The reversal of 44742809 is 90824744.

44742809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 120409 = 6680^2 + 347^2 .

It is a cyclic number.

It is not a de Polignac number, because 44742809 - 2⁸ = 44742553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44742839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22371404 + 22371405.

It is an arithmetic number, because the mean of its divisors is an integer number (22371405).

Almost surely, 2^44742809 is an apocalyptic number.

It is an amenable number.

44742809 is a deficient number, since it is larger than the sum of its proper divisors (1).

44742809 is an equidigital number, since it uses as much as digits as its factorization.

44742809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 44742809 is about 6689.0065779606. The cubic root of 44742809 is about 355.0104050379.

The spelling of 44742809 in words is "forty-four million, seven hundred forty-two thousand, eight hundred nine".