1279413 has 6 divisors (see below), whose sum is σ = 1848054. Its totient is φ = 852936.

The previous prime is 1279361. The next prime is 1279417. The reversal of 1279413 is 3149721.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 603729 = 822^2 + 777^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1279413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279417) 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 in 5 ways as a sum of consecutive naturals, for example, 71070 + ... + 71087.

It is an arithmetic number, because the mean of its divisors is an integer number (308009).

2^1279413 is an apocalyptic number.

It is an amenable number.

1279413 is a deficient number, since it is larger than the sum of its proper divisors (568641).

1279413 is a wasteful number, since it uses less digits than its factorization.

1279413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142163 (or 142160 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1279413 is about 1131.1114003492. Note that the first 3 decimals coincide. The cubic root of 1279413 is about 108.5601045933.

The spelling of 1279413 in words is "one million, two hundred seventy-nine thousand, four hundred thirteen".