86797847 has 4 divisors (see below), whose sum is σ = 86816496. Its totient is φ = 86779200.

The previous prime is 86797829. The next prime is 86797891. The reversal of 86797847 is 74879768.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 86797847 - 2⁸ = 86797591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86797792 and 86797801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86797807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4103 + ... + 13799.

It is an arithmetic number, because the mean of its divisors is an integer number (21704124).

Almost surely, 2^86797847 is an apocalyptic number.

86797847 is a deficient number, since it is larger than the sum of its proper divisors (18649).

86797847 is an equidigital number, since it uses as much as digits as its factorization.

86797847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18648.

The product of its digits is 4741632, while the sum is 56.

The square root of 86797847 is about 9316.5362125631. The cubic root of 86797847 is about 442.7612969379.

The spelling of 86797847 in words is "eighty-six million, seven hundred ninety-seven thousand, eight hundred forty-seven".