13809316 has 6 divisors (see below), whose sum is σ = 24166310. Its totient is φ = 6904656.

The previous prime is 13809311. The next prime is 13809331. The reversal of 13809316 is 61390831.

13809316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11249316 + 2560000 = 3354^2 + 1600^2 .

It is not an unprimeable number, because it can be changed into a prime (13809311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1726161 + ... + 1726168.

Almost surely, 2^13809316 is an apocalyptic number.

It is an amenable number.

13809316 is a deficient number, since it is larger than the sum of its proper divisors (10356994).

13809316 is a wasteful number, since it uses less digits than its factorization.

13809316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452333 (or 3452331 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13809316 is about 3716.0888041057. The cubic root of 13809316 is about 239.9149930426.

The spelling of 13809316 in words is "thirteen million, eight hundred nine thousand, three hundred sixteen".