209340094 has 4 divisors (see below), whose sum is σ = 314010144. Its totient is φ = 104670046.

The previous prime is 209340073. The next prime is 209340097. The reversal of 209340094 is 490043902.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209340097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52335022 + ... + 52335025.

It is an arithmetic number, because the mean of its divisors is an integer number (78502536).

Almost surely, 2^209340094 is an apocalyptic number.

209340094 is a deficient number, since it is larger than the sum of its proper divisors (104670050).

209340094 is a wasteful number, since it uses less digits than its factorization.

209340094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104670049.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 209340094 is about 14468.5899105614. The cubic root of 209340094 is about 593.7689340740.

Adding to 209340094 its reverse (490043902), we get a palindrome (699383996).

The spelling of 209340094 in words is "two hundred nine million, three hundred forty thousand, ninety-four".