86699539 has 4 divisors (see below), whose sum is σ = 86745456. Its totient is φ = 86653624.

The previous prime is 86699521. The next prime is 86699549. The reversal of 86699539 is 93599668.

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 86699539 - 2¹⁷ = 86568467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86699539.

It is not an unprimeable number, because it can be changed into a prime (86699549) 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, 19999 + ... + 23944.

It is an arithmetic number, because the mean of its divisors is an integer number (21686364).

Almost surely, 2^86699539 is an apocalyptic number.

86699539 is a deficient number, since it is larger than the sum of its proper divisors (45917).

86699539 is a wasteful number, since it uses less digits than its factorization.

86699539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45916.

The product of its digits is 3149280, while the sum is 55.

The square root of 86699539 is about 9311.2587226432. The cubic root of 86699539 is about 442.5940753518.

The spelling of 86699539 in words is "eighty-six million, six hundred ninety-nine thousand, five hundred thirty-nine".