1279013 has 2 divisors, whose sum is σ = 1279014. Its totient is φ = 1279012.

The previous prime is 1279001. The next prime is 1279021. The reversal of 1279013 is 3109721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 611524 = 817^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1279013 - 2⁴ = 1278997 is a prime.

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 1279013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279043) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639506 + 639507.

It is an arithmetic number, because the mean of its divisors is an integer number (639507).

2^1279013 is an apocalyptic number.

It is an amenable number.

1279013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279013 is an equidigital number, since it uses as much as digits as its factorization.

1279013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1279013 is about 1130.9345692833. The cubic root of 1279013 is about 108.5487898815.

The spelling of 1279013 in words is "one million, two hundred seventy-nine thousand, thirteen".