209134808 has 8 divisors (see below), whose sum is σ = 392127780. Its totient is φ = 104567400.

The previous prime is 209134789. The next prime is 209134823. The reversal of 209134808 is 808431902.

It is a happy number.

209134808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13070918 + ... + 13070933.

Almost surely, 2^209134808 is an apocalyptic number.

It is an amenable number.

209134808 is a deficient number, since it is larger than the sum of its proper divisors (182992972).

209134808 is a wasteful number, since it uses less digits than its factorization.

209134808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26141857 (or 26141853 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 209134808 is about 14461.4939753817. The cubic root of 209134808 is about 593.5747806070.

The spelling of 209134808 in words is "two hundred nine million, one hundred thirty-four thousand, eight hundred eight".