1279944 has 48 divisors (see below), whose sum is σ = 3591900. Its totient is φ = 411264.

The previous prime is 1279937. The next prime is 1279961. The reversal of 1279944 is 4499721.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 152100 = 1062^2 + 390^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1279899 and 1279908.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1782 + ... + 2394.

2^1279944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1279944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1795950).

1279944 is an abundant number, since it is smaller than the sum of its proper divisors (2311956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1279944 is a wasteful number, since it uses less digits than its factorization.

1279944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 647 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1279944 is about 1131.3461008904. The cubic root of 1279944 is about 108.5751212304.

The spelling of 1279944 in words is "one million, two hundred seventy-nine thousand, nine hundred forty-four".