86715249 has 16 divisors (see below), whose sum is σ = 126645120. Its totient is φ = 52532480.

The previous prime is 86715247. The next prime is 86715253. The reversal of 86715249 is 94251768.

It is a cyclic number.

It is not a de Polignac number, because 86715249 - 2¹ = 86715247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86715249.

It is not an unprimeable number, because it can be changed into a prime (86715241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27837 + ... + 30794.

It is an arithmetic number, because the mean of its divisors is an integer number (7915320).

Almost surely, 2^86715249 is an apocalyptic number.

It is an amenable number.

86715249 is a deficient number, since it is larger than the sum of its proper divisors (39929871).

86715249 is a wasteful number, since it uses less digits than its factorization.

86715249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58680.

The product of its digits is 120960, while the sum is 42.

The square root of 86715249 is about 9312.1022868094. The cubic root of 86715249 is about 442.6208064935.

The spelling of 86715249 in words is "eighty-six million, seven hundred fifteen thousand, two hundred forty-nine".