244866389 has 2 divisors, whose sum is σ = 244866390. Its totient is φ = 244866388.

The previous prime is 244866371. The next prime is 244866403. The reversal of 244866389 is 983668442.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236698225 + 8168164 = 15385^2 + 2858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244866389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244866289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122433194 + 122433195.

It is an arithmetic number, because the mean of its divisors is an integer number (122433195).

Almost surely, 2^244866389 is an apocalyptic number.

It is an amenable number.

244866389 is a deficient number, since it is larger than the sum of its proper divisors (1).

244866389 is an equidigital number, since it uses as much as digits as its factorization.

244866389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 50.

The square root of 244866389 is about 15648.2072136076. The cubic root of 244866389 is about 625.6187059360.

The spelling of 244866389 in words is "two hundred forty-four million, eight hundred sixty-six thousand, three hundred eighty-nine".