13753809 has 12 divisors (see below), whose sum is σ = 19901700. Its totient is φ = 9153024.

The previous prime is 13753787. The next prime is 13753849. The reversal of 13753809 is 90835731.

It can be written as a sum of positive squares in 2 ways, for example, as 9641025 + 4112784 = 3105^2 + 2028^2 .

It is not a de Polignac number, because 13753809 - 2¹⁶ = 13688273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13753849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6337 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (1658475).

Almost surely, 2^13753809 is an apocalyptic number.

It is an amenable number.

13753809 is a deficient number, since it is larger than the sum of its proper divisors (6147891).

13753809 is a wasteful number, since it uses less digits than its factorization.

13753809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 13753809 is about 3708.6128134385. The cubic root of 13753809 is about 239.5931126510.

It can be divided in two parts, 1375 and 3809, that added together give a square (5184 = 72²).

The spelling of 13753809 in words is "thirteen million, seven hundred fifty-three thousand, eight hundred nine".