86791799 has 2 divisors, whose sum is σ = 86791800. Its totient is φ = 86791798.

The previous prime is 86791787. The next prime is 86791813. The reversal of 86791799 is 99719768.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86791799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86791769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43395899 + 43395900.

It is an arithmetic number, because the mean of its divisors is an integer number (43395900).

Almost surely, 2^86791799 is an apocalyptic number.

86791799 is a deficient number, since it is larger than the sum of its proper divisors (1).

86791799 is an equidigital number, since it uses as much as digits as its factorization.

86791799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 56.

The square root of 86791799 is about 9316.2116227574. The cubic root of 86791799 is about 442.7510129558.

The spelling of 86791799 in words is "eighty-six million, seven hundred ninety-one thousand, seven hundred ninety-nine".