83986869 has 16 divisors (see below), whose sum is σ = 119572992. Its totient is φ = 52309488.

The previous prime is 83986867. The next prime is 83986909. The reversal of 83986869 is 96868938.

It is not a de Polignac number, because 83986869 - 2¹ = 83986867 is a prime.

It is a super-2 number, since 2×83986869² = 14107588328846322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83986867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11187 + ... + 17120.

It is an arithmetic number, because the mean of its divisors is an integer number (7473312).

Almost surely, 2^83986869 is an apocalyptic number.

It is an amenable number.

83986869 is a deficient number, since it is larger than the sum of its proper divisors (35586123).

83986869 is a wasteful number, since it uses less digits than its factorization.

83986869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28376.

The product of its digits is 4478976, while the sum is 57.

The square root of 83986869 is about 9164.4350071349. The cubic root of 83986869 is about 437.9290923766.

The spelling of 83986869 in words is "eighty-three million, nine hundred eighty-six thousand, eight hundred sixty-nine".