13947297 has 32 divisors (see below), whose sum is σ = 23396352. Its totient is φ = 7193664.

The previous prime is 13947281. The next prime is 13947299. The reversal of 13947297 is 79274931.

It is not a de Polignac number, because 13947297 - 2⁴ = 13947281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13947299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12288 + ... + 13374.

It is an arithmetic number, because the mean of its divisors is an integer number (731136).

Almost surely, 2^13947297 is an apocalyptic number.

It is an amenable number.

13947297 is a deficient number, since it is larger than the sum of its proper divisors (9449055).

13947297 is a wasteful number, since it uses less digits than its factorization.

13947297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157.

The product of its digits is 95256, while the sum is 42.

The square root of 13947297 is about 3734.6080115589. The cubic root of 13947297 is about 240.7114134341.

The spelling of 13947297 in words is "thirteen million, nine hundred forty-seven thousand, two hundred ninety-seven".