13437493 has 2 divisors, whose sum is σ = 13437494. Its totient is φ = 13437492.

The previous prime is 13437481. The next prime is 13437499. The reversal of 13437493 is 39473431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13126129 + 311364 = 3623^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 13437493 - 2¹³ = 13429301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13437499) 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 as a sum of consecutive naturals, namely, 6718746 + 6718747.

It is an arithmetic number, because the mean of its divisors is an integer number (6718747).

Almost surely, 2^13437493 is an apocalyptic number.

It is an amenable number.

13437493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13437493 is an equidigital number, since it uses as much as digits as its factorization.

13437493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 13437493 is about 3665.7186198616. The cubic root of 13437493 is about 237.7420940441.

It can be divided in two parts, 1343 and 7493, that added together give a square (8836 = 94²).

The spelling of 13437493 in words is "thirteen million, four hundred thirty-seven thousand, four hundred ninety-three".