13009843 has 12 divisors (see below), whose sum is σ = 16510392. Its totient is φ = 10137120.

The previous prime is 13009823. The next prime is 13009901. The reversal of 13009843 is 34890031.

13009843 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13009843 - 2⁹ = 13009331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13009823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11530 + ... + 12607.

It is an arithmetic number, because the mean of its divisors is an integer number (1375866).

Almost surely, 2^13009843 is an apocalyptic number.

13009843 is a deficient number, since it is larger than the sum of its proper divisors (3500549).

13009843 is a wasteful number, since it uses less digits than its factorization.

13009843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24162 (or 24155 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13009843 is about 3606.9159956949. The cubic root of 13009843 is about 235.1927978709.

Adding to 13009843 its reverse (34890031), we get a palindrome (47899874).

The spelling of 13009843 in words is "thirteen million, nine thousand, eight hundred forty-three".