86876729 has 2 divisors, whose sum is σ = 86876730. Its totient is φ = 86876728.

The previous prime is 86876707. The next prime is 86876731. The reversal of 86876729 is 92767868.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78765625 + 8111104 = 8875^2 + 2848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86876729 is a prime.

Together with 86876731, 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 (86876429) 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, 43438364 + 43438365.

It is an arithmetic number, because the mean of its divisors is an integer number (43438365).

Almost surely, 2^86876729 is an apocalyptic number.

It is an amenable number.

86876729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86876729 is an equidigital number, since it uses as much as digits as its factorization.

86876729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 86876729 is about 9320.7686914760. The cubic root of 86876729 is about 442.8953836806.

The spelling of 86876729 in words is "eighty-six million, eight hundred seventy-six thousand, seven hundred twenty-nine".