83199999 has 4 divisors (see below), whose sum is σ = 110933336. Its totient is φ = 55466664.

The previous prime is 83199973. The next prime is 83200009. The reversal of 83199999 is 99999138.

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

It is not a de Polignac number, because 83199999 - 2⁷ = 83199871 is a prime.

It is a Duffinian number.

83199999 is a modest number, since divided by 9999 gives 8319 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83199299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13866664 + ... + 13866669.

It is an arithmetic number, because the mean of its divisors is an integer number (27733334).

Almost surely, 2^83199999 is an apocalyptic number.

83199999 is a deficient number, since it is larger than the sum of its proper divisors (27733337).

83199999 is a wasteful number, since it uses less digits than its factorization.

83199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27733336.

The product of its digits is 1417176, while the sum is 57.

The square root of 83199999 is about 9121.4033459770. The cubic root of 83199999 is about 436.5571514754.

The spelling of 83199999 in words is "eighty-three million, one hundred ninety-nine thousand, nine hundred ninety-nine".