13957147 has 4 divisors (see below), whose sum is σ = 14010480. Its totient is φ = 13903816.

The previous prime is 13957117. The next prime is 13957171. The reversal of 13957147 is 74175931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13957147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13957117) 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, 26272 + ... + 26797.

It is an arithmetic number, because the mean of its divisors is an integer number (3502620).

Almost surely, 2^13957147 is an apocalyptic number.

13957147 is a deficient number, since it is larger than the sum of its proper divisors (53333).

13957147 is an equidigital number, since it uses as much as digits as its factorization.

13957147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53332.

The product of its digits is 26460, while the sum is 37.

The square root of 13957147 is about 3735.9265249734. The cubic root of 13957147 is about 240.7680659760.

The spelling of 13957147 in words is "thirteen million, nine hundred fifty-seven thousand, one hundred forty-seven".