13197937 has 4 divisors (see below), whose sum is σ = 13554676. Its totient is φ = 12841200.

The previous prime is 13197923. The next prime is 13197953. The reversal of 13197937 is 73979131.

It is a happy number.

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 10751841 + 2446096 = 3279^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13197937 - 2¹⁹ = 12673649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13197937.

It is not an unprimeable number, because it can be changed into a prime (13197137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178314 + ... + 178387.

It is an arithmetic number, because the mean of its divisors is an integer number (3388669).

Almost surely, 2^13197937 is an apocalyptic number.

It is an amenable number.

13197937 is a deficient number, since it is larger than the sum of its proper divisors (356739).

13197937 is an equidigital number, since it uses as much as digits as its factorization.

13197937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356738.

The product of its digits is 35721, while the sum is 40.

The square root of 13197937 is about 3632.8965027922. The cubic root of 13197937 is about 236.3208374498.

It can be divided in two parts, 1319793 and 7, that multiplied together give a triangular number (9238551 = T₄₂₉₈).

The spelling of 13197937 in words is "thirteen million, one hundred ninety-seven thousand, nine hundred thirty-seven".