1279853 has 2 divisors, whose sum is σ = 1279854. Its totient is φ = 1279852.

The previous prime is 1279847. The next prime is 1279871. The reversal of 1279853 is 3589721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249924 + 29929 = 1118^2 + 173^2 .

It is an emirp because it is prime and its reverse (3589721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1279853 - 2²⁰ = 231277 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁴ + 7⁷ + 9 + 8⁶ + 5⁴ + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639926 + 639927.

It is an arithmetic number, because the mean of its divisors is an integer number (639927).

2^1279853 is an apocalyptic number.

It is an amenable number.

1279853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279853 is an equidigital number, since it uses as much as digits as its factorization.

1279853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 1279853 is about 1131.3058825976. The cubic root of 1279853 is about 108.5725480527.

The spelling of 1279853 in words is "one million, two hundred seventy-nine thousand, eight hundred fifty-three".