13965769 has 4 divisors (see below), whose sum is σ = 14109844. Its totient is φ = 13821696.

The previous prime is 13965751. The next prime is 13965773. The reversal of 13965769 is 96756931.

13965769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96756931 = 277 ⋅349303.

It can be written as a sum of positive squares in 2 ways, for example, as 10112400 + 3853369 = 3180^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 13965769 - 2⁷ = 13965641 is a prime.

It is a super-2 number, since 2×13965769² = 390085407522722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13965719) 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, 71892 + ... + 72085.

It is an arithmetic number, because the mean of its divisors is an integer number (3527461).

Almost surely, 2^13965769 is an apocalyptic number.

It is an amenable number.

13965769 is a deficient number, since it is larger than the sum of its proper divisors (144075).

13965769 is an equidigital number, since it uses as much as digits as its factorization.

13965769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144074.

The product of its digits is 306180, while the sum is 46.

The square root of 13965769 is about 3737.0802774358. The cubic root of 13965769 is about 240.8176337697.

The spelling of 13965769 in words is "thirteen million, nine hundred sixty-five thousand, seven hundred sixty-nine".