86709199 has 4 divisors (see below), whose sum is σ = 88725736. Its totient is φ = 84692664.

The previous prime is 86709169. The next prime is 86709221. The reversal of 86709199 is 99190768.

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

It is a cyclic number.

It is not a de Polignac number, because 86709199 - 2⁷ = 86709071 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 (86709109) 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, 1008204 + ... + 1008289.

It is an arithmetic number, because the mean of its divisors is an integer number (22181434).

Almost surely, 2^86709199 is an apocalyptic number.

86709199 is a deficient number, since it is larger than the sum of its proper divisors (2016537).

86709199 is a wasteful number, since it uses less digits than its factorization.

86709199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016536.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 86709199 is about 9311.7774350550. Note that the first 3 decimals coincide. The cubic root of 86709199 is about 442.6105125787.

The spelling of 86709199 in words is "eighty-six million, seven hundred nine thousand, one hundred ninety-nine".