13813769 has 4 divisors (see below), whose sum is σ = 13853700. Its totient is φ = 13773840.

The previous prime is 13813759. The next prime is 13813771. The reversal of 13813769 is 96731831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9765625 + 4048144 = 3125^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 13813769 - 2¹² = 13809673 is a prime.

It is a super-2 number, since 2×13813769² = 381640427970722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13813759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19442 + ... + 20139.

It is an arithmetic number, because the mean of its divisors is an integer number (3463425).

Almost surely, 2^13813769 is an apocalyptic number.

It is an amenable number.

13813769 is a deficient number, since it is larger than the sum of its proper divisors (39931).

13813769 is an equidigital number, since it uses as much as digits as its factorization.

13813769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39930.

The product of its digits is 27216, while the sum is 38.

The square root of 13813769 is about 3716.6879072637. The cubic root of 13813769 is about 239.9407782119.

The spelling of 13813769 in words is "thirteen million, eight hundred thirteen thousand, seven hundred sixty-nine".