170216899 has 2 divisors, whose sum is σ = 170216900. Its totient is φ = 170216898.

The previous prime is 170216843. The next prime is 170216911. The reversal of 170216899 is 998612071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170216899 - 2⁷ = 170216771 is a prime.

It is not a weakly prime, because it can be changed into another prime (170216819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85108449 + 85108450.

It is an arithmetic number, because the mean of its divisors is an integer number (85108450).

Almost surely, 2^170216899 is an apocalyptic number.

170216899 is a deficient number, since it is larger than the sum of its proper divisors (1).

170216899 is an equidigital number, since it uses as much as digits as its factorization.

170216899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 170216899 is about 13046.7198559638. The cubic root of 170216899 is about 554.2013228695.

The spelling of 170216899 in words is "one hundred seventy million, two hundred sixteen thousand, eight hundred ninety-nine".