209240713 has 8 divisors (see below), whose sum is σ = 236134080. Its totient is φ = 183659280.

The previous prime is 209240701. The next prime is 209240741. The reversal of 209240713 is 317042902.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209240713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209240783) 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, 327645 + ... + 328282.

It is an arithmetic number, because the mean of its divisors is an integer number (29516760).

Almost surely, 2^209240713 is an apocalyptic number.

It is an amenable number.

209240713 is a deficient number, since it is larger than the sum of its proper divisors (26893367).

209240713 is a wasteful number, since it uses less digits than its factorization.

209240713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655967.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 209240713 is about 14465.1551322480. The cubic root of 209240713 is about 593.6749583020.

The spelling of 209240713 in words is "two hundred nine million, two hundred forty thousand, seven hundred thirteen".