13197789 has 32 divisors (see below), whose sum is σ = 21924480. Its totient is φ = 7776000.

The previous prime is 13197773. The next prime is 13197803. The reversal of 13197789 is 98779131.

It is not a de Polignac number, because 13197789 - 2⁴ = 13197773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13197719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10389 + ... + 11589.

It is an arithmetic number, because the mean of its divisors is an integer number (685140).

Almost surely, 2^13197789 is an apocalyptic number.

It is an amenable number.

13197789 is a deficient number, since it is larger than the sum of its proper divisors (8726691).

13197789 is a wasteful number, since it uses less digits than its factorization.

13197789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258 (or 1252 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 13197789 is about 3632.8761333137. The cubic root of 13197789 is about 236.3199540891.

The spelling of 13197789 in words is "thirteen million, one hundred ninety-seven thousand, seven hundred eighty-nine".