1223799 has 8 divisors (see below), whose sum is σ = 1636992. Its totient is φ = 813240.

The previous prime is 1223777. The next prime is 1223857. The reversal of 1223799 is 9973221.

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

It is not a de Polignac number, because 1223799 - 2⁵ = 1223767 is a prime.

1223799 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (204624).

2^1223799 is an apocalyptic number.

1223799 is a deficient number, since it is larger than the sum of its proper divisors (413193).

1223799 is an equidigital number, since it uses as much as digits as its factorization.

1223799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its digits is 6804, while the sum is 33.

The square root of 1223799 is about 1106.2544915163. The cubic root of 1223799 is about 106.9637691408.

The spelling of 1223799 in words is "one million, two hundred twenty-three thousand, seven hundred ninety-nine".