13809764 has 6 divisors (see below), whose sum is σ = 24167094. Its totient is φ = 6904880.

The previous prime is 13809749. The next prime is 13809773. The reversal of 13809764 is 46790831.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 792100 = 3608^2 + 890^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1726217 + ... + 1726224.

It is an arithmetic number, because the mean of its divisors is an integer number (4027849).

Almost surely, 2^13809764 is an apocalyptic number.

It is an amenable number.

13809764 is a deficient number, since it is larger than the sum of its proper divisors (10357330).

13809764 is a wasteful number, since it uses less digits than its factorization.

13809764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452445 (or 3452443 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13809764 is about 3716.1490820472. The cubic root of 13809764 is about 239.9175874447.

The spelling of 13809764 in words is "thirteen million, eight hundred nine thousand, seven hundred sixty-four".