13189247 has 4 divisors (see below), whose sum is σ = 13306080. Its totient is φ = 13072416.

The previous prime is 13189243. The next prime is 13189259. The reversal of 13189247 is 74298131.

13189247 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, and also an emirpimes, since its reverse is a distinct semiprime: 74298131 = 241 ⋅308291.

It is a cyclic number.

It is not a de Polignac number, because 13189247 - 2² = 13189243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13189243) 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, 58247 + ... + 58472.

It is an arithmetic number, because the mean of its divisors is an integer number (3326520).

Almost surely, 2^13189247 is an apocalyptic number.

13189247 is a deficient number, since it is larger than the sum of its proper divisors (116833).

13189247 is a wasteful number, since it uses less digits than its factorization.

13189247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116832.

The product of its digits is 12096, while the sum is 35.

The square root of 13189247 is about 3631.7002904976. The cubic root of 13189247 is about 236.2689586607.

The spelling of 13189247 in words is "thirteen million, one hundred eighty-nine thousand, two hundred forty-seven".