209040326 has 12 divisors (see below), whose sum is σ = 344657796. Its totient is φ = 95018220.

The previous prime is 209040311. The next prime is 209040331. The reversal of 209040326 is 623040902.

It is a junction number, because it is equal to n+sod(n) for n = 209040295 and 209040304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431660 + ... + 432143.

It is an arithmetic number, because the mean of its divisors is an integer number (28721483).

Almost surely, 2^209040326 is an apocalyptic number.

209040326 is a deficient number, since it is larger than the sum of its proper divisors (135617470).

209040326 is a wasteful number, since it uses less digits than its factorization.

209040326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863827 (or 863816 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 209040326 is about 14458.2269314048. The cubic root of 209040326 is about 593.4853796115.

The spelling of 209040326 in words is "two hundred nine million, forty thousand, three hundred twenty-six".