1306279 has 4 divisors (see below), whose sum is σ = 1406776. Its totient is φ = 1205784.

The previous prime is 1306273. The next prime is 1306289. The reversal of 1306279 is 9726031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9726031 = 7 ⋅1389433.

It is a cyclic number.

It is not a de Polignac number, because 1306279 - 2¹¹ = 1304231 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 (1306273) 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, 50229 + ... + 50254.

It is an arithmetic number, because the mean of its divisors is an integer number (351694).

2^1306279 is an apocalyptic number.

1306279 is a deficient number, since it is larger than the sum of its proper divisors (100497).

1306279 is a wasteful number, since it uses less digits than its factorization.

1306279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100496.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1306279 is about 1142.9256318764. The cubic root of 1306279 is about 109.3147204170.

The spelling of 1306279 in words is "one million, three hundred six thousand, two hundred seventy-nine".