216873099 has 8 divisors (see below), whose sum is σ = 321293520. Its totient is φ = 144582048.

The previous prime is 216873079. The next prime is 216873101. The reversal of 216873099 is 990378612.

It is not a de Polignac number, because 216873099 - 2¹¹ = 216871051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216873079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4016142 + ... + 4016195.

It is an arithmetic number, because the mean of its divisors is an integer number (40161690).

Almost surely, 2^216873099 is an apocalyptic number.

216873099 is a deficient number, since it is larger than the sum of its proper divisors (104420421).

216873099 is an equidigital number, since it uses as much as digits as its factorization.

216873099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032346 (or 8032340 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 216873099 is about 14726.6119321452. The cubic root of 216873099 is about 600.8073381878.

The spelling of 216873099 in words is "two hundred sixteen million, eight hundred seventy-three thousand, ninety-nine".