86991259 has 8 divisors (see below), whose sum is σ = 89538048. Its totient is φ = 84481320.

The previous prime is 86991257. The next prime is 86991269. The reversal of 86991259 is 95219968.

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 86991259 - 2¹ = 86991257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86991257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4387 + ... + 13900.

It is an arithmetic number, because the mean of its divisors is an integer number (11192256).

Almost surely, 2^86991259 is an apocalyptic number.

86991259 is a deficient number, since it is larger than the sum of its proper divisors (2546789).

86991259 is a wasteful number, since it uses less digits than its factorization.

86991259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18425.

The product of its digits is 349920, while the sum is 49.

The square root of 86991259 is about 9326.9104745355. The cubic root of 86991259 is about 443.0899219071.

The spelling of 86991259 in words is "eighty-six million, nine hundred ninety-one thousand, two hundred fifty-nine".