13397437 has 4 divisors (see below), whose sum is σ = 13548060. Its totient is φ = 13246816.

The previous prime is 13397407. The next prime is 13397443. The reversal of 13397437 is 73479331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73479331 = 31 ⋅2370301.

It can be written as a sum of positive squares in 2 ways, for example, as 7584516 + 5812921 = 2754^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 13397437 - 2¹⁹ = 12873149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13397396 and 13397405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397407) 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, 75178 + ... + 75355.

It is an arithmetic number, because the mean of its divisors is an integer number (3387015).

Almost surely, 2^13397437 is an apocalyptic number.

It is an amenable number.

13397437 is a deficient number, since it is larger than the sum of its proper divisors (150623).

13397437 is an equidigital number, since it uses as much as digits as its factorization.

13397437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150622.

The product of its digits is 47628, while the sum is 37.

The square root of 13397437 is about 3660.2509476810. The cubic root of 13397437 is about 237.5056294141.

The spelling of 13397437 in words is "thirteen million, three hundred ninety-seven thousand, four hundred thirty-seven".