115447729 has 2 divisors, whose sum is σ = 115447730. Its totient is φ = 115447728.

The previous prime is 115447723. The next prime is 115447763. The reversal of 115447729 is 927744511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 1385329 = 10680^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 115447729 - 2³ = 115447721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115447691 and 115447700.

It is not a weakly prime, because it can be changed into another prime (115447721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57723864 + 57723865.

It is an arithmetic number, because the mean of its divisors is an integer number (57723865).

Almost surely, 2^115447729 is an apocalyptic number.

It is an amenable number.

115447729 is a deficient number, since it is larger than the sum of its proper divisors (1).

115447729 is an equidigital number, since it uses as much as digits as its factorization.

115447729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 115447729 is about 10744.6604878889. The cubic root of 115447729 is about 486.9246918367.

The spelling of 115447729 in words is "one hundred fifteen million, four hundred forty-seven thousand, seven hundred twenty-nine".