86966399 has 4 divisors (see below), whose sum is σ = 93656136. Its totient is φ = 80276664.

The previous prime is 86966387. The next prime is 86966443. The reversal of 86966399 is 99366968.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86966399 - 2¹² = 86962303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86966599) 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, 3344849 + ... + 3344874.

It is an arithmetic number, because the mean of its divisors is an integer number (23414034).

Almost surely, 2^86966399 is an apocalyptic number.

86966399 is a deficient number, since it is larger than the sum of its proper divisors (6689737).

86966399 is a wasteful number, since it uses less digits than its factorization.

86966399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689736.

The product of its digits is 3779136, while the sum is 56.

The square root of 86966399 is about 9325.5776764767. The cubic root of 86966399 is about 443.0477097544.

The spelling of 86966399 in words is "eighty-six million, nine hundred sixty-six thousand, three hundred ninety-nine".