1299822 has 16 divisors (see below), whose sum is σ = 2712960. Its totient is φ = 414392.

The previous prime is 1299821. The next prime is 1299827. The reversal of 1299822 is 2289921.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299821) 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, 4572 + ... + 4847.

It is an arithmetic number, because the mean of its divisors is an integer number (169560).

2^1299822 is an apocalyptic number.

1299822 is an abundant number, since it is smaller than the sum of its proper divisors (1413138).

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

1299822 is a wasteful number, since it uses less digits than its factorization.

1299822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447.

The product of its digits is 5184, while the sum is 33.

The square root of 1299822 is about 1140.0973642632. The cubic root of 1299822 is about 109.1343068497.

Subtracting 1299822 from its reverse (2289921), we obtain a palindrome (990099).

The spelling of 1299822 in words is "one million, two hundred ninety-nine thousand, eight hundred twenty-two".