1279873 has 4 divisors (see below), whose sum is σ = 1462720. Its totient is φ = 1097028.

The previous prime is 1279871. The next prime is 1279877. The reversal of 1279873 is 3789721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1279873 - 2¹ = 1279871 is a prime.

It is a super-2 number, since 2×1279873² = 3276149792258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1279871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91413 + ... + 91426.

It is an arithmetic number, because the mean of its divisors is an integer number (365680).

2^1279873 is an apocalyptic number.

It is an amenable number.

1279873 is a deficient number, since it is larger than the sum of its proper divisors (182847).

1279873 is an equidigital number, since it uses as much as digits as its factorization.

1279873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182846.

The product of its digits is 21168, while the sum is 37.

The square root of 1279873 is about 1131.3147219054. The cubic root of 1279873 is about 108.5731135967.

It can be divided in two parts, 127 and 9873, that added together give a 4-th power (10000 = 10⁴).

The spelling of 1279873 in words is "one million, two hundred seventy-nine thousand, eight hundred seventy-three".