13853579 has 4 divisors (see below), whose sum is σ = 14148384. Its totient is φ = 13558776.

The previous prime is 13853569. The next prime is 13853597. The reversal of 13853579 is 97535831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97535831 = 193 ⋅505367.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13853579 is a prime.

It is a super-2 number, since 2×13853579² = 383843302218482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13853509) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147332 + ... + 147425.

It is an arithmetic number, because the mean of its divisors is an integer number (3537096).

Almost surely, 2^13853579 is an apocalyptic number.

13853579 is a deficient number, since it is larger than the sum of its proper divisors (294805).

13853579 is an equidigital number, since it uses as much as digits as its factorization.

13853579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294804.

The product of its digits is 113400, while the sum is 41.

The square root of 13853579 is about 3722.0396290206. The cubic root of 13853579 is about 240.1710528268.

The spelling of 13853579 in words is "thirteen million, eight hundred fifty-three thousand, five hundred seventy-nine".