209883713 has 4 divisors (see below), whose sum is σ = 226028628. Its totient is φ = 193738800.

The previous prime is 209883697. The next prime is 209883719. The reversal of 209883713 is 317388902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126855169 + 83028544 = 11263^2 + 9112^2 .

It is a cyclic number.

It is not a de Polignac number, because 209883713 - 2⁴ = 209883697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209883719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8072438 + ... + 8072463.

It is an arithmetic number, because the mean of its divisors is an integer number (56507157).

Almost surely, 2^209883713 is an apocalyptic number.

It is an amenable number.

209883713 is a deficient number, since it is larger than the sum of its proper divisors (16144915).

209883713 is a wasteful number, since it uses less digits than its factorization.

209883713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144914.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 209883713 is about 14487.3639079026. The cubic root of 209883713 is about 594.2824605977.

The spelling of 209883713 in words is "two hundred nine million, eight hundred eighty-three thousand, seven hundred thirteen".