13809748 has 12 divisors (see below), whose sum is σ = 24193792. Its totient is φ = 6897240.

The previous prime is 13809709. The next prime is 13809749. The reversal of 13809748 is 84790831.

It is a self number, because there is not a number n which added to its sum of digits gives 13809748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809749) 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 3 ways as a sum of consecutive naturals, for example, 4711 + ... + 7057.

Almost surely, 2^13809748 is an apocalyptic number.

It is an amenable number.

13809748 is a deficient number, since it is larger than the sum of its proper divisors (10384044).

13809748 is a wasteful number, since it uses less digits than its factorization.

13809748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 13809748 is about 3716.1469292804. The cubic root of 13809748 is about 239.9174947884.

The spelling of 13809748 in words is "thirteen million, eight hundred nine thousand, seven hundred forty-eight".