83899799 has 2 divisors, whose sum is σ = 83899800. Its totient is φ = 83899798.

The previous prime is 83899789. The next prime is 83899853. The reversal of 83899799 is 99799838.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83899799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83899789) 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 as a sum of consecutive naturals, namely, 41949899 + 41949900.

It is an arithmetic number, because the mean of its divisors is an integer number (41949900).

Almost surely, 2^83899799 is an apocalyptic number.

83899799 is a deficient number, since it is larger than the sum of its proper divisors (1).

83899799 is an equidigital number, since it uses as much as digits as its factorization.

83899799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 62.

The square root of 83899799 is about 9159.6833460551. The cubic root of 83899799 is about 437.7777049400. Note that the first 4 decimals are identical.

The spelling of 83899799 in words is "eighty-three million, eight hundred ninety-nine thousand, seven hundred ninety-nine".