1306449 has 15 divisors (see below), whose sum is σ = 1967097.
Its totient is φ = 864108.
The previous prime is 1306447. The next prime is 1306451. The reversal of 1306449 is 9446031.
The square root of 1306449 is 1143.
It is a perfect power (a square), and thus also a powerful number.
1306449 is a `hidden beast` number, since 13 + 0 + 644 + 9 = 666.
It is an interprime number because it is at equal distance from previous prime (1306447) and next prime (1306451).
It is not a de Polignac number, because 1306449 - 21 = 1306447 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is not an unprimeable number, because it can be changed into a prime (1306447) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 10224 + ... + 10350.
21306449 is an apocalyptic number.
1306449 is the 1143-rd square number.
1306449 is the 572-nd centered octagonal number.
It is an amenable number.
1306449 is a deficient number, since it is larger than the sum of its proper divisors (660648).
1306449 is an frugal number, since it uses more digits than its factorization.
1306449 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 266 (or 130 counting only the distinct ones).
The product of its (nonzero) digits is 2592, while the sum is 27.
The cubic root of 1306449 is about 109.3194623076.
The spelling of 1306449 in words is "one million, three hundred six thousand, four hundred forty-nine".