209929714 has 8 divisors (see below), whose sum is σ = 320836140. Its totient is φ = 102984336.

The previous prime is 209929711. The next prime is 209929723. The reversal of 209929714 is 417929902.

It can be written as a sum of positive squares in 2 ways, for example, as 199798225 + 10131489 = 14135^2 + 3183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (209929711) 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 in 3 ways as a sum of consecutive naturals, for example, 990129 + ... + 990340.

Almost surely, 2^209929714 is an apocalyptic number.

209929714 is a deficient number, since it is larger than the sum of its proper divisors (110906426).

209929714 is a wasteful number, since it uses less digits than its factorization.

209929714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980524.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 209929714 is about 14488.9514458431. The cubic root of 209929714 is about 594.3258744642.

It can be divided in two parts, 2099 and 29714, that added together give a palindrome (31813).

The spelling of 209929714 in words is "two hundred nine million, nine hundred twenty-nine thousand, seven hundred fourteen".