13809554 has 16 divisors (see below), whose sum is σ = 22752576. Its totient is φ = 6234000.

The previous prime is 13809553. The next prime is 13809557. The reversal of 13809554 is 45590831.

It is not an unprimeable number, because it can be changed into a prime (13809553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244 + ... + 5400.

It is an arithmetic number, because the mean of its divisors is an integer number (1422036).

Almost surely, 2^13809554 is an apocalyptic number.

13809554 is a deficient number, since it is larger than the sum of its proper divisors (8943022).

13809554 is a wasteful number, since it uses less digits than its factorization.

13809554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4321.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 13809554 is about 3716.1208268839. The cubic root of 13809554 is about 239.9163713257.

The spelling of 13809554 in words is "thirteen million, eight hundred nine thousand, five hundred fifty-four".