209976116 has 12 divisors (see below), whose sum is σ = 419952288. Its totient is φ = 89989752.

The previous prime is 209976097. The next prime is 209976157. The reversal of 209976116 is 611679902.

209976116 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749546 + ... + 3749601.

It is an arithmetic number, because the mean of its divisors is an integer number (34996024).

Almost surely, 2^209976116 is an apocalyptic number.

It is an amenable number.

209976116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209976116 is a wasteful number, since it uses less digits than its factorization.

209976116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499158 (or 7499156 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 209976116 is about 14490.5526464659. The cubic root of 209976116 is about 594.3696603534.

The spelling of 209976116 in words is "two hundred nine million, nine hundred seventy-six thousand, one hundred sixteen".