13943147 has 4 divisors (see below), whose sum is σ = 13983000. Its totient is φ = 13903296.

The previous prime is 13943143. The next prime is 13943159. The reversal of 13943147 is 74134931.

13943147 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.

It is a cyclic number.

It is not a de Polignac number, because 13943147 - 2² = 13943143 is a prime.

It is a super-2 number, since 2×13943147² = 388822696527218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13943141) 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, 19397 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (3495750).

Almost surely, 2^13943147 is an apocalyptic number.

13943147 is a deficient number, since it is larger than the sum of its proper divisors (39853).

13943147 is an equidigital number, since it uses as much as digits as its factorization.

13943147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39852.

The product of its digits is 9072, while the sum is 32.

The square root of 13943147 is about 3734.0523563550. The cubic root of 13943147 is about 240.6875366103.

The spelling of 13943147 in words is "thirteen million, nine hundred forty-three thousand, one hundred forty-seven".