86686399 has 8 divisors (see below), whose sum is σ = 88341120. Its totient is φ = 85037976.

The previous prime is 86686387. The next prime is 86686421. The reversal of 86686399 is 99368668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86686399 - 2⁹ = 86685887 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 (86686309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33382 + ... + 35884.

It is an arithmetic number, because the mean of its divisors is an integer number (11042640).

Almost surely, 2^86686399 is an apocalyptic number.

86686399 is a deficient number, since it is larger than the sum of its proper divisors (1654721).

86686399 is a wasteful number, since it uses less digits than its factorization.

86686399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149.

The product of its digits is 3359232, while the sum is 55.

The square root of 86686399 is about 9310.5530985006. The cubic root of 86686399 is about 442.5717146794.

The spelling of 86686399 in words is "eighty-six million, six hundred eighty-six thousand, three hundred ninety-nine".