13198789 has 4 divisors (see below), whose sum is σ = 13347180. Its totient is φ = 13050400.

The previous prime is 13198769. The next prime is 13198793. The reversal of 13198789 is 98789131.

13198789 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2505889 + 10692900 = 1583^2 + 3270^2 .

It is a cyclic number.

It is not a de Polignac number, because 13198789 - 2¹¹ = 13196741 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 (13198769) 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, 74062 + ... + 74239.

It is an arithmetic number, because the mean of its divisors is an integer number (3336795).

Almost surely, 2^13198789 is an apocalyptic number.

It is an amenable number.

13198789 is a deficient number, since it is larger than the sum of its proper divisors (148391).

13198789 is an equidigital number, since it uses as much as digits as its factorization.

13198789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148390.

The product of its digits is 108864, while the sum is 46.

The square root of 13198789 is about 3633.0137627045. The cubic root of 13198789 is about 236.3259226138.

The spelling of 13198789 in words is "thirteen million, one hundred ninety-eight thousand, seven hundred eighty-nine".