244664389 has 2 divisors, whose sum is σ = 244664390. Its totient is φ = 244664388.

The previous prime is 244664353. The next prime is 244664393. The reversal of 244664389 is 983466442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195524289 + 49140100 = 13983^2 + 7010^2 .

It is a cyclic number.

It is not a de Polignac number, because 244664389 - 2⁹ = 244663877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244664309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122332194 + 122332195.

It is an arithmetic number, because the mean of its divisors is an integer number (122332195).

Almost surely, 2^244664389 is an apocalyptic number.

It is an amenable number.

244664389 is a deficient number, since it is larger than the sum of its proper divisors (1).

244664389 is an equidigital number, since it uses as much as digits as its factorization.

244664389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 46.

The square root of 244664389 is about 15641.7514684258. The cubic root of 244664389 is about 625.4466260443.

The spelling of 244664389 in words is "two hundred forty-four million, six hundred sixty-four thousand, three hundred eighty-nine".