83171899 has 2 divisors, whose sum is σ = 83171900. Its totient is φ = 83171898.

The previous prime is 83171867. The next prime is 83171917. The reversal of 83171899 is 99817138.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83171899 - 2⁵ = 83171867 is a prime.

It is not a weakly prime, because it can be changed into another prime (83171839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41585949 + 41585950.

It is an arithmetic number, because the mean of its divisors is an integer number (41585950).

Almost surely, 2^83171899 is an apocalyptic number.

83171899 is a deficient number, since it is larger than the sum of its proper divisors (1).

83171899 is an equidigital number, since it uses as much as digits as its factorization.

83171899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The square root of 83171899 is about 9119.8628827412. The cubic root of 83171899 is about 436.5079982807.

The spelling of 83171899 in words is "eighty-three million, one hundred seventy-one thousand, eight hundred ninety-nine".