13947245 has 16 divisors (see below), whose sum is σ = 18122160. Its totient is φ = 10243584.

The previous prime is 13947233. The next prime is 13947247. The reversal of 13947245 is 54274931.

It can be written as a sum of positive squares in 8 ways, for example, as 1087849 + 12859396 = 1043^2 + 3586^2 .

It is not a de Polignac number, because 13947245 - 2⁴ = 13947229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13947247) 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 15 ways as a sum of consecutive naturals, for example, 14417 + ... + 15353.

It is an arithmetic number, because the mean of its divisors is an integer number (1132635).

Almost surely, 2^13947245 is an apocalyptic number.

It is an amenable number.

13947245 is a deficient number, since it is larger than the sum of its proper divisors (4174915).

13947245 is a wasteful number, since it uses less digits than its factorization.

13947245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its digits is 30240, while the sum is 35.

The square root of 13947245 is about 3734.6010496437. The cubic root of 13947245 is about 240.7111142839.

The spelling of 13947245 in words is "thirteen million, nine hundred forty-seven thousand, two hundred forty-five".