99755729 has 2 divisors, whose sum is σ = 99755730. Its totient is φ = 99755728.

The previous prime is 99755723. The next prime is 99755731. The reversal of 99755729 is 92755799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96432400 + 3323329 = 9820^2 + 1823^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99755729 is a prime.

Together with 99755731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99755723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49877864 + 49877865.

It is an arithmetic number, because the mean of its divisors is an integer number (49877865).

Almost surely, 2^99755729 is an apocalyptic number.

It is an amenable number.

99755729 is a deficient number, since it is larger than the sum of its proper divisors (1).

99755729 is an equidigital number, since it uses as much as digits as its factorization.

99755729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1786050, while the sum is 53.

The square root of 99755729 is about 9987.7789823364. The cubic root of 99755729 is about 463.7806400323.

The spelling of 99755729 in words is "ninety-nine million, seven hundred fifty-five thousand, seven hundred twenty-nine".