1279307 has 2 divisors, whose sum is σ = 1279308. Its totient is φ = 1279306.

The previous prime is 1279303. The next prime is 1279309. The reversal of 1279307 is 7039721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1279307 - 2² = 1279303 is a prime.

Together with 1279309, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1279307.

It is not a weakly prime, because it can be changed into another prime (1279303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639653 + 639654.

It is an arithmetic number, because the mean of its divisors is an integer number (639654).

2^1279307 is an apocalyptic number.

1279307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279307 is an equidigital number, since it uses as much as digits as its factorization.

1279307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 1279307 is about 1131.0645428091. The cubic root of 1279307 is about 108.5571064243.

The spelling of 1279307 in words is "one million, two hundred seventy-nine thousand, three hundred seven".