13936947 has 4 divisors (see below), whose sum is σ = 18582600. Its totient is φ = 9291296.

The previous prime is 13936939. The next prime is 13936963. The reversal of 13936947 is 74963931.

13936947 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13936947 - 2³ = 13936939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13936899 and 13936908.

It is not an unprimeable number, because it can be changed into a prime (13936927) 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, 2322822 + ... + 2322827.

It is an arithmetic number, because the mean of its divisors is an integer number (4645650).

Almost surely, 2^13936947 is an apocalyptic number.

13936947 is a deficient number, since it is larger than the sum of its proper divisors (4645653).

13936947 is an equidigital number, since it uses as much as digits as its factorization.

13936947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645652.

The product of its digits is 122472, while the sum is 42.

The square root of 13936947 is about 3733.2220667943. Note that the first 3 decimals coincide. The cubic root of 13936947 is about 240.6518563829.

The spelling of 13936947 in words is "thirteen million, nine hundred thirty-six thousand, nine hundred forty-seven".