209339982 has 12 divisors (see below), whose sum is σ = 453570000. Its totient is φ = 69779988.

The previous prime is 209339971. The next prime is 209340037. The reversal of 209339982 is 289933902.

209339982 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5814982 + ... + 5815017.

It is an arithmetic number, because the mean of its divisors is an integer number (37797500).

Almost surely, 2^209339982 is an apocalyptic number.

209339982 is an abundant number, since it is smaller than the sum of its proper divisors (244230018).

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

209339982 is a wasteful number, since it uses less digits than its factorization.

209339982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630007 (or 11630004 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 209339982 is about 14468.5860401077. The cubic root of 209339982 is about 593.7688281823.

The spelling of 209339982 in words is "two hundred nine million, three hundred thirty-nine thousand, nine hundred eighty-two".