1306849 has 2 divisors, whose sum is σ = 1306850. Its totient is φ = 1306848.

The previous prime is 1306831. The next prime is 1306853. The reversal of 1306849 is 9486031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1306449 + 400 = 1143^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306849 - 2⁵ = 1306817 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1306849.

It is not a weakly prime, because it can be changed into another prime (1306819) 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, 653424 + 653425.

It is an arithmetic number, because the mean of its divisors is an integer number (653425).

2^1306849 is an apocalyptic number.

It is an amenable number.

1306849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306849 is an equidigital number, since it uses as much as digits as its factorization.

1306849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1306849 is about 1143.1749647364. The cubic root of 1306849 is about 109.3306180749.

The spelling of 1306849 in words is "one million, three hundred six thousand, eight hundred forty-nine".