1279959 has 8 divisors (see below), whose sum is σ = 1761792. Its totient is φ = 825720.

The previous prime is 1279937. The next prime is 1279961. The reversal of 1279959 is 9599721.

1279959 = 188² + 189² + ... + 218².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1279959 - 2⁸ = 1279703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1279959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6789 + ... + 6974.

It is an arithmetic number, because the mean of its divisors is an integer number (220224).

2^1279959 is an apocalyptic number.

1279959 is a deficient number, since it is larger than the sum of its proper divisors (481833).

1279959 is a wasteful number, since it uses less digits than its factorization.

1279959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13797.

The product of its digits is 51030, while the sum is 42.

The square root of 1279959 is about 1131.3527301421. The cubic root of 1279959 is about 108.5755453689.

The spelling of 1279959 in words is "one million, two hundred seventy-nine thousand, nine hundred fifty-nine".