13753909 has 4 divisors (see below), whose sum is σ = 14811916. Its totient is φ = 12695904.

The previous prime is 13753849. The next prime is 13753919. The reversal of 13753909 is 90935731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90935731 = 5527 ⋅16453.

It can be written as a sum of positive squares in 2 ways, for example, as 6517809 + 7236100 = 2553^2 + 2690^2 .

It is not a de Polignac number, because 13753909 - 2⁷ = 13753781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13753919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528984 + ... + 529009.

It is an arithmetic number, because the mean of its divisors is an integer number (3702979).

Almost surely, 2^13753909 is an apocalyptic number.

It is an amenable number.

13753909 is a deficient number, since it is larger than the sum of its proper divisors (1058007).

13753909 is a wasteful number, since it uses less digits than its factorization.

13753909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058006.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 13753909 is about 3708.6262955439. The cubic root of 13753909 is about 239.5936933205.

The spelling of 13753909 in words is "thirteen million, seven hundred fifty-three thousand, nine hundred nine".