86799869 has 4 divisors (see below), whose sum is σ = 93476796. Its totient is φ = 80122944.

The previous prime is 86799863. The next prime is 86799877. The reversal of 86799869 is 96899768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4897369 + 81902500 = 2213^2 + 9050^2 .

It is a cyclic number.

It is not a de Polignac number, because 86799869 - 2¹² = 86795773 is a prime.

It is a super-2 number, since 2×86799869² = 15068434516834322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86799863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3338444 + ... + 3338469.

It is an arithmetic number, because the mean of its divisors is an integer number (23369199).

Almost surely, 2^86799869 is an apocalyptic number.

It is an amenable number.

86799869 is a deficient number, since it is larger than the sum of its proper divisors (6676927).

86799869 is a wasteful number, since it uses less digits than its factorization.

86799869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676926.

The product of its digits is 11757312, while the sum is 62.

The square root of 86799869 is about 9316.6447286563. The cubic root of 86799869 is about 442.7647350278.

The spelling of 86799869 in words is "eighty-six million, seven hundred ninety-nine thousand, eight hundred sixty-nine".