1223449 has 2 divisors, whose sum is σ = 1223450. Its totient is φ = 1223448.

The previous prime is 1223447. The next prime is 1223459. The reversal of 1223449 is 9443221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 413449 = 900^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223449 - 2¹ = 1223447 is a prime.

Together with 1223447, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1223447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611724 + 611725.

It is an arithmetic number, because the mean of its divisors is an integer number (611725).

2^1223449 is an apocalyptic number.

It is an amenable number.

1223449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223449 is an equidigital number, since it uses as much as digits as its factorization.

1223449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 1223449 is about 1106.0962887561. The cubic root of 1223449 is about 106.9535711457.

The spelling of 1223449 in words is "one million, two hundred twenty-three thousand, four hundred forty-nine".