244121729 has 2 divisors, whose sum is σ = 244121730. Its totient is φ = 244121728.

The previous prime is 244121723. The next prime is 244121753. The reversal of 244121729 is 927121442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242736400 + 1385329 = 15580^2 + 1177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244121729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244121695 and 244121704.

It is not a weakly prime, because it can be changed into another prime (244121723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122060864 + 122060865.

It is an arithmetic number, because the mean of its divisors is an integer number (122060865).

Almost surely, 2^244121729 is an apocalyptic number.

It is an amenable number.

244121729 is a deficient number, since it is larger than the sum of its proper divisors (1).

244121729 is an equidigital number, since it uses as much as digits as its factorization.

244121729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 244121729 is about 15624.3953162994. The cubic root of 244121729 is about 624.9838749973.

The spelling of 244121729 in words is "two hundred forty-four million, one hundred twenty-one thousand, seven hundred twenty-nine".