86399897 has 4 divisors (see below), whose sum is σ = 90947280. Its totient is φ = 81852516.

The previous prime is 86399881. The next prime is 86399909. The reversal of 86399897 is 79899368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86399897 - 2⁴ = 86399881 is a prime.

It is a super-2 number, since 2×86399897² = 14929884403221218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86399827) 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, 2273663 + ... + 2273700.

It is an arithmetic number, because the mean of its divisors is an integer number (22736820).

Almost surely, 2^86399897 is an apocalyptic number.

It is an amenable number.

86399897 is a deficient number, since it is larger than the sum of its proper divisors (4547383).

86399897 is a wasteful number, since it uses less digits than its factorization.

86399897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547382.

The product of its digits is 5878656, while the sum is 59.

The square root of 86399897 is about 9295.1544903783. The cubic root of 86399897 is about 442.0836041631.

The spelling of 86399897 in words is "eighty-six million, three hundred ninety-nine thousand, eight hundred ninety-seven".