1227869 has 4 divisors (see below), whose sum is σ = 1248060. Its totient is φ = 1207680.

The previous prime is 1227847. The next prime is 1227871. The reversal of 1227869 is 9687221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 525625 + 702244 = 725^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227869 - 2¹² = 1223773 is a prime.

It is a super-2 number, since 2×1227869² = 3015324562322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227829) 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, 10004 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (312015).

2^1227869 is an apocalyptic number.

It is an amenable number.

1227869 is a deficient number, since it is larger than the sum of its proper divisors (20191).

1227869 is an equidigital number, since it uses as much as digits as its factorization.

1227869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20190.

The product of its digits is 12096, while the sum is 35.

The square root of 1227869 is about 1108.0925051637. The cubic root of 1227869 is about 107.0822147413.

The spelling of 1227869 in words is "one million, two hundred twenty-seven thousand, eight hundred sixty-nine".