13109789 has 16 divisors (see below), whose sum is σ = 16536960. Its totient is φ = 10095360.

The previous prime is 13109779. The next prime is 13109809. The reversal of 13109789 is 98790131.

It is not a de Polignac number, because 13109789 - 2¹² = 13105693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13109749) 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, 5897 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (1033560).

Almost surely, 2^13109789 is an apocalyptic number.

It is an amenable number.

13109789 is a deficient number, since it is larger than the sum of its proper divisors (3427171).

13109789 is a wasteful number, since it uses less digits than its factorization.

13109789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 13109789 is about 3620.7442605078. The cubic root of 13109789 is about 235.7935389104.

The spelling of 13109789 in words is "thirteen million, one hundred nine thousand, seven hundred eighty-nine".