13896909 has 24 divisors (see below), whose sum is σ = 22152312. Its totient is φ = 8340480.

The previous prime is 13896907. The next prime is 13896929. The reversal of 13896909 is 90969831.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 12638025 = 1122^2 + 3555^2 .

It is not a de Polignac number, because 13896909 - 2¹ = 13896907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13896907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3349 + ... + 6245.

It is an arithmetic number, because the mean of its divisors is an integer number (923013).

Almost surely, 2^13896909 is an apocalyptic number.

It is an amenable number.

13896909 is a deficient number, since it is larger than the sum of its proper divisors (8255403).

13896909 is a wasteful number, since it uses less digits than its factorization.

13896909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957 (or 2954 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 13896909 is about 3727.8558180273. The cubic root of 13896909 is about 240.4211874888.

The spelling of 13896909 in words is "thirteen million, eight hundred ninety-six thousand, nine hundred nine".