13382779 has 4 divisors (see below), whose sum is σ = 13391920. Its totient is φ = 13373640.

The previous prime is 13382773. The next prime is 13382807. The reversal of 13382779 is 97728331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13382779 - 2³ = 13382771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13382771) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824 + ... + 5485.

It is an arithmetic number, because the mean of its divisors is an integer number (3347980).

Almost surely, 2^13382779 is an apocalyptic number.

13382779 is a deficient number, since it is larger than the sum of its proper divisors (9141).

13382779 is an equidigital number, since it uses as much as digits as its factorization.

13382779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9140.

The product of its digits is 63504, while the sum is 40.

The square root of 13382779 is about 3658.2480779739. The cubic root of 13382779 is about 237.4189803053.

It can be divided in two parts, 13382 and 779, that added together give a square (14161 = 119²).

The spelling of 13382779 in words is "thirteen million, three hundred eighty-two thousand, seven hundred seventy-nine".