209344039 has 8 divisors (see below), whose sum is σ = 215186400. Its totient is φ = 203511456.

The previous prime is 209343989. The next prime is 209344043. The reversal of 209344039 is 930443902.

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

It is a cyclic number.

It is not a de Polignac number, because 209344039 - 2¹¹ = 209341991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209343995 and 209344013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209344049) 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, 70662 + ... + 73564.

It is an arithmetic number, because the mean of its divisors is an integer number (26898300).

Almost surely, 2^209344039 is an apocalyptic number.

209344039 is a deficient number, since it is larger than the sum of its proper divisors (5842361).

209344039 is a wasteful number, since it uses less digits than its factorization.

209344039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4889.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 209344039 is about 14468.7262397213. The cubic root of 209344039 is about 593.7726638957.

The spelling of 209344039 in words is "two hundred nine million, three hundred forty-four thousand, thirty-nine".