1227799 has 4 divisors (see below), whose sum is σ = 1292440. Its totient is φ = 1163160.

The previous prime is 1227797. The next prime is 1227829. The reversal of 1227799 is 9977221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9977221 = 61 ⋅163561.

It is a cyclic number.

It is not a de Polignac number, because 1227799 - 2¹ = 1227797 is a prime.

It is a Duffinian number.

1227799 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 (1227797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32292 + ... + 32329.

It is an arithmetic number, because the mean of its divisors is an integer number (323110).

2^1227799 is an apocalyptic number.

1227799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1227799 is a deficient number, since it is larger than the sum of its proper divisors (64641).

1227799 is an equidigital number, since it uses as much as digits as its factorization.

1227799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64640.

The product of its digits is 15876, while the sum is 37.

The square root of 1227799 is about 1108.0609189029. The cubic root of 1227799 is about 107.0801798072.

It can be divided in two parts, 122779 and 9, that multiplied together give a palindrome (1105011).

The spelling of 1227799 in words is "one million, two hundred twenty-seven thousand, seven hundred ninety-nine".