13489847 has 16 divisors (see below), whose sum is σ = 15993600. Its totient is φ = 11370744.

The previous prime is 13489841. The next prime is 13489849. The reversal of 13489847 is 74898431.

It is not a de Polignac number, because 13489847 - 2⁶ = 13489783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13489798 and 13489807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13489841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22688 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (999600).

Almost surely, 2^13489847 is an apocalyptic number.

13489847 is a deficient number, since it is larger than the sum of its proper divisors (2503753).

13489847 is an frugal number, since it uses more digits than its factorization.

13489847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 661 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 13489847 is about 3672.8527060039. The cubic root of 13489847 is about 238.0504506658.

The spelling of 13489847 in words is "thirteen million, four hundred eighty-nine thousand, eight hundred forty-seven".