86808479 has 2 divisors, whose sum is σ = 86808480. Its totient is φ = 86808478.

The previous prime is 86808433. The next prime is 86808481. The reversal of 86808479 is 97480868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86808479 - 2²⁰ = 85759903 is a prime.

Together with 86808481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86808679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43404239 + 43404240.

It is an arithmetic number, because the mean of its divisors is an integer number (43404240).

Almost surely, 2^86808479 is an apocalyptic number.

86808479 is a deficient number, since it is larger than the sum of its proper divisors (1).

86808479 is an equidigital number, since it uses as much as digits as its factorization.

86808479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 86808479 is about 9317.1067934204. The cubic root of 86808479 is about 442.7793743676.

The spelling of 86808479 in words is "eighty-six million, eight hundred eight thousand, four hundred seventy-nine".