244172689 has 2 divisors, whose sum is σ = 244172690. Its totient is φ = 244172688.

The previous prime is 244172659. The next prime is 244172699. The reversal of 244172689 is 986271442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225510289 + 18662400 = 15017^2 + 4320^2 .

It is a cyclic number.

It is not a de Polignac number, because 244172689 - 2¹⁵ = 244139921 is a prime.

It is not a weakly prime, because it can be changed into another prime (244172659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122086344 + 122086345.

It is an arithmetic number, because the mean of its divisors is an integer number (122086345).

Almost surely, 2^244172689 is an apocalyptic number.

It is an amenable number.

244172689 is a deficient number, since it is larger than the sum of its proper divisors (1).

244172689 is an equidigital number, since it uses as much as digits as its factorization.

244172689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 244172689 is about 15626.0260143134. The cubic root of 244172689 is about 625.0273600823.

The spelling of 244172689 in words is "two hundred forty-four million, one hundred seventy-two thousand, six hundred eighty-nine".