13813747 has 4 divisors (see below), whose sum is σ = 13826520. Its totient is φ = 13800976.

The previous prime is 13813733. The next prime is 13813757. The reversal of 13813747 is 74731831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74731831 = 71 ⋅1052561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13813747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13813757) 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, 4597 + ... + 6982.

It is an arithmetic number, because the mean of its divisors is an integer number (3456630).

Almost surely, 2^13813747 is an apocalyptic number.

13813747 is a deficient number, since it is larger than the sum of its proper divisors (12773).

13813747 is a wasteful number, since it uses less digits than its factorization.

13813747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12772.

The product of its digits is 14112, while the sum is 34.

The square root of 13813747 is about 3716.6849476382. The cubic root of 13813747 is about 239.9406508341.

The spelling of 13813747 in words is "thirteen million, eight hundred thirteen thousand, seven hundred forty-seven".