86999493 has 16 divisors (see below), whose sum is σ = 132963840. Its totient is φ = 49566576.

The previous prime is 86999477. The next prime is 86999503. The reversal of 86999493 is 39499968.

It is not a de Polignac number, because 86999493 - 2⁴ = 86999477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86999443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1318 + ... + 13256.

It is an arithmetic number, because the mean of its divisors is an integer number (8310240).

Almost surely, 2^86999493 is an apocalyptic number.

It is an amenable number.

86999493 is a deficient number, since it is larger than the sum of its proper divisors (45964347).

86999493 is a wasteful number, since it uses less digits than its factorization.

86999493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296.

The product of its digits is 3779136, while the sum is 57.

The square root of 86999493 is about 9327.3518749965. The cubic root of 86999493 is about 443.1039014240.

The spelling of 86999493 in words is "eighty-six million, nine hundred ninety-nine thousand, four hundred ninety-three".