86309997 has 4 divisors (see below), whose sum is σ = 115080000. Its totient is φ = 57539996.

The previous prime is 86309981. The next prime is 86309999. The reversal of 86309997 is 79990368.

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 86309997 - 2⁴ = 86309981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86309999) 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, 14384997 + ... + 14385002.

It is an arithmetic number, because the mean of its divisors is an integer number (28770000).

Almost surely, 2^86309997 is an apocalyptic number.

It is an amenable number.

86309997 is a deficient number, since it is larger than the sum of its proper divisors (28770003).

86309997 is a wasteful number, since it uses less digits than its factorization.

86309997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28770002.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 86309997 is about 9290.3173788628. The cubic root of 86309997 is about 441.9302200742.

The spelling of 86309997 in words is "eighty-six million, three hundred nine thousand, nine hundred ninety-seven".