1306999 has 4 divisors (see below), whose sum is σ = 1309680. Its totient is φ = 1304320.

The previous prime is 1306997. The next prime is 1307051. The reversal of 1306999 is 9996031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9996031 = 37 ⋅270163.

It is a cyclic number.

It is not a de Polignac number, because 1306999 - 2¹ = 1306997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306997) 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, 379 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (327420).

2^1306999 is an apocalyptic number.

1306999 is a deficient number, since it is larger than the sum of its proper divisors (2681).

1306999 is an equidigital number, since it uses as much as digits as its factorization.

1306999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 1306999 is about 1143.2405696090. The cubic root of 1306999 is about 109.3348009007.

The spelling of 1306999 in words is "one million, three hundred six thousand, nine hundred ninety-nine".