13786489 has 2 divisors, whose sum is σ = 13786490. Its totient is φ = 13786488.

The previous prime is 13786469. The next prime is 13786501. The reversal of 13786489 is 98468731.

It is a happy number.

13786489 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 1710864 = 3475^2 + 1308^2 .

It is an emirp because it is prime and its reverse (98468731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13786489 - 2¹⁷ = 13655417 is a prime.

It is not a weakly prime, because it can be changed into another prime (13786469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6893244 + 6893245.

It is an arithmetic number, because the mean of its divisors is an integer number (6893245).

Almost surely, 2^13786489 is an apocalyptic number.

It is an amenable number.

13786489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13786489 is an equidigital number, since it uses as much as digits as its factorization.

13786489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 13786489 is about 3713.0161594046. The cubic root of 13786489 is about 239.7827258128.

The spelling of 13786489 in words is "thirteen million, seven hundred eighty-six thousand, four hundred eighty-nine".