86279999 has 4 divisors (see below), whose sum is σ = 92916936. Its totient is φ = 79643064.

The previous prime is 86279989. The next prime is 86280011. The reversal of 86279999 is 99997268.

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 86279999 - 2⁴ = 86279983 is a prime.

It is a Duffinian number.

86279999 is a modest number, since divided by 9999 gives 8627 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86279909) 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, 3318449 + ... + 3318474.

It is an arithmetic number, because the mean of its divisors is an integer number (23229234).

Almost surely, 2^86279999 is an apocalyptic number.

86279999 is a deficient number, since it is larger than the sum of its proper divisors (6636937).

86279999 is a wasteful number, since it uses less digits than its factorization.

86279999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636936.

The product of its digits is 4408992, while the sum is 59.

The square root of 86279999 is about 9288.7027619577. The cubic root of 86279999 is about 441.8790148860.

It can be divided in two parts, 86279 and 999, that added together give a palindrome (87278).

The spelling of 86279999 in words is "eighty-six million, two hundred seventy-nine thousand, nine hundred ninety-nine".