13809776 has 20 divisors (see below), whose sum is σ = 27211800. Its totient is φ = 6787392.

The previous prime is 13809773. The next prime is 13809779. The reversal of 13809776 is 67790831.

It is an interprime number because it is at equal distance from previous prime (13809773) and next prime (13809779).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809773) 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, 6371 + ... + 8258.

It is an arithmetic number, because the mean of its divisors is an integer number (1360590).

Almost surely, 2^13809776 is an apocalyptic number.

13809776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13809776 is a deficient number, since it is larger than the sum of its proper divisors (13402024).

13809776 is a wasteful number, since it uses less digits than its factorization.

13809776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14696 (or 14690 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 13809776 is about 3716.1506966214. The cubic root of 13809776 is about 239.9176569368.

The spelling of 13809776 in words is "thirteen million, eight hundred nine thousand, seven hundred seventy-six".