88315729 has 2 divisors, whose sum is σ = 88315730. Its totient is φ = 88315728.

The previous prime is 88315709. The next prime is 88315741. The reversal of 88315729 is 92751388.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87890625 + 425104 = 9375^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 88315729 - 2⁹ = 88315217 is a prime.

It is not a weakly prime, because it can be changed into another prime (88315709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44157864 + 44157865.

It is an arithmetic number, because the mean of its divisors is an integer number (44157865).

Almost surely, 2^88315729 is an apocalyptic number.

It is an amenable number.

88315729 is a deficient number, since it is larger than the sum of its proper divisors (1).

88315729 is an equidigital number, since it uses as much as digits as its factorization.

88315729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 88315729 is about 9397.6448645392. The cubic root of 88315729 is about 445.3273339612.

The spelling of 88315729 in words is "eighty-eight million, three hundred fifteen thousand, seven hundred twenty-nine".