86992879 has 2 divisors, whose sum is σ = 86992880. Its totient is φ = 86992878.

The previous prime is 86992799. The next prime is 86992889. The reversal of 86992879 is 97829968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86992879 - 2⁷ = 86992751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86992889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43496439 + 43496440.

It is an arithmetic number, because the mean of its divisors is an integer number (43496440).

Almost surely, 2^86992879 is an apocalyptic number.

86992879 is a deficient number, since it is larger than the sum of its proper divisors (1).

86992879 is an equidigital number, since it uses as much as digits as its factorization.

86992879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 58.

The square root of 86992879 is about 9326.9973196094. The cubic root of 86992879 is about 443.0926723797.

The spelling of 86992879 in words is "eighty-six million, nine hundred ninety-two thousand, eight hundred seventy-nine".