86404797 has 6 divisors (see below), whose sum is σ = 124806942. Its totient is φ = 57603192.

The previous prime is 86404789. The next prime is 86404817. The reversal of 86404797 is 79740468.

It can be written as a sum of positive squares in only one way, i.e., 80084601 + 6320196 = 8949^2 + 2514^2 .

It is not a de Polignac number, because 86404797 - 2³ = 86404789 is a prime.

It is a super-2 number, since 2×86404797² = 14931577889222418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86404757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4800258 + ... + 4800275.

It is an arithmetic number, because the mean of its divisors is an integer number (20801157).

Almost surely, 2^86404797 is an apocalyptic number.

It is an amenable number.

86404797 is a deficient number, since it is larger than the sum of its proper divisors (38402145).

86404797 is a wasteful number, since it uses less digits than its factorization.

86404797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600539 (or 9600536 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 86404797 is about 9295.4180648317. The cubic root of 86404797 is about 442.0919613054.

The spelling of 86404797 in words is "eighty-six million, four hundred four thousand, seven hundred ninety-seven".