1227389 has 4 divisors (see below), whose sum is σ = 1233024. Its totient is φ = 1221756.

The previous prime is 1227379. The next prime is 1227407. The reversal of 1227389 is 9837221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9837221 = 103 ⋅95507.

It is a cyclic number.

It is not a de Polignac number, because 1227389 - 2⁸ = 1227133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227319) 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 3 ways as a sum of consecutive naturals, for example, 2477 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (308256).

2^1227389 is an apocalyptic number.

It is an amenable number.

1227389 is a deficient number, since it is larger than the sum of its proper divisors (5635).

1227389 is an equidigital number, since it uses as much as digits as its factorization.

1227389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5634.

The product of its digits is 6048, while the sum is 32.

The square root of 1227389 is about 1107.8758955768. The cubic root of 1227389 is about 107.0682593541.

The spelling of 1227389 in words is "one million, two hundred twenty-seven thousand, three hundred eighty-nine".