86788291 has 2 divisors, whose sum is σ = 86788292. Its totient is φ = 86788290.

The previous prime is 86788279. The next prime is 86788297. The reversal of 86788291 is 19288768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86788291 - 2¹⁵ = 86755523 is a prime.

It is not a weakly prime, because it can be changed into another prime (86788297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43394145 + 43394146.

It is an arithmetic number, because the mean of its divisors is an integer number (43394146).

Almost surely, 2^86788291 is an apocalyptic number.

86788291 is a deficient number, since it is larger than the sum of its proper divisors (1).

86788291 is an equidigital number, since it uses as much as digits as its factorization.

86788291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

The square root of 86788291 is about 9316.0233469008. The cubic root of 86788291 is about 442.7450477552.

The spelling of 86788291 in words is "eighty-six million, seven hundred eighty-eight thousand, two hundred ninety-one".