1279417 has 2 divisors, whose sum is σ = 1279418. Its totient is φ = 1279416.

The previous prime is 1279361. The next prime is 1279427. The reversal of 1279417 is 7149721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 256 = 1131^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 1279417 - 2¹¹ = 1277369 is a prime.

It is equal to p₉₈₅₆₃ and since 1279417 and 98563 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1279427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639708 + 639709.

It is an arithmetic number, because the mean of its divisors is an integer number (639709).

2^1279417 is an apocalyptic number.

It is an amenable number.

1279417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279417 is an equidigital number, since it uses as much as digits as its factorization.

1279417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The square root of 1279417 is about 1131.1131685203. The cubic root of 1279417 is about 108.5602177285.

The spelling of 1279417 in words is "one million, two hundred seventy-nine thousand, four hundred seventeen".