83899356 has 12 divisors (see below), whose sum is σ = 195765192. Its totient is φ = 27966448.

The previous prime is 83899289. The next prime is 83899363. The reversal of 83899356 is 65399838.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 83899299 and 83899308.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3495795 + ... + 3495818.

It is an arithmetic number, because the mean of its divisors is an integer number (16313766).

Almost surely, 2^83899356 is an apocalyptic number.

It is an amenable number.

83899356 is an abundant number, since it is smaller than the sum of its proper divisors (111865836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83899356 is a wasteful number, since it uses less digits than its factorization.

83899356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991620 (or 6991618 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 83899356 is about 9159.6591639646. The cubic root of 83899356 is about 437.7769344342.

It can be divided in two parts, 83899 and 356, that added together give a triangular number (84255 = T₄₁₀).

The spelling of 83899356 in words is "eighty-three million, eight hundred ninety-nine thousand, three hundred fifty-six".