1223089 has 12 divisors (see below), whose sum is σ = 1442100. Its totient is φ = 1034208.

The previous prime is 1223083. The next prime is 1223093. The reversal of 1223089 is 9803221.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 207025 = 1008^2 + 455^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1223089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5227 + ... + 5455.

It is an arithmetic number, because the mean of its divisors is an integer number (120175).

2^1223089 is an apocalyptic number.

It is an amenable number.

1223089 is a deficient number, since it is larger than the sum of its proper divisors (219011).

1223089 is a wasteful number, since it uses less digits than its factorization.

1223089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1223089 is about 1105.9335423071. The cubic root of 1223089 is about 106.9430797500.

The spelling of 1223089 in words is "one million, two hundred twenty-three thousand, eighty-nine".