209310093 has 24 divisors (see below), whose sum is σ = 309310560. Its totient is φ = 136352160.

The previous prime is 209310089. The next prime is 209310133. The reversal of 209310093 is 390013902.

It is not a de Polignac number, because 209310093 - 2² = 209310089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209310293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88318 + ... + 90656.

It is an arithmetic number, because the mean of its divisors is an integer number (12887940).

Almost surely, 2^209310093 is an apocalyptic number.

It is an amenable number.

209310093 is a deficient number, since it is larger than the sum of its proper divisors (100000467).

209310093 is a wasteful number, since it uses less digits than its factorization.

209310093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569 (or 2566 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 209310093 is about 14467.5531103224. The cubic root of 209310093 is about 593.7405679314.

Adding to 209310093 its reverse (390013902), we get a palindrome (599323995).

The spelling of 209310093 in words is "two hundred nine million, three hundred ten thousand, ninety-three".