13209894 has 12 divisors (see below), whose sum is σ = 28621476. Its totient is φ = 4403292.

The previous prime is 13209881. The next prime is 13209919. The reversal of 13209894 is 49890231.

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, 366924 + ... + 366959.

It is an arithmetic number, because the mean of its divisors is an integer number (2385123).

Almost surely, 2^13209894 is an apocalyptic number.

13209894 is an abundant number, since it is smaller than the sum of its proper divisors (15411582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13209894 is a wasteful number, since it uses less digits than its factorization.

13209894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733891 (or 733888 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 13209894 is about 3634.5417868006. The cubic root of 13209894 is about 236.3921828262.

The spelling of 13209894 in words is "thirteen million, two hundred nine thousand, eight hundred ninety-four".