1223454445 has 16 divisors (see below), whose sum is σ = 1489041792. Its totient is φ = 964884160.

The previous prime is 1223454383. The next prime is 1223454461. The reversal of 1223454445 is 5444543221.

It is a de Polignac number, because none of the positive numbers 2^k-1223454445 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223454445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205815 + ... + 211675.

It is an arithmetic number, because the mean of its divisors is an integer number (93065112).

Almost surely, 2^1223454445 is an apocalyptic number.

It is an amenable number.

1223454445 is a deficient number, since it is larger than the sum of its proper divisors (265587347).

1223454445 is an equidigital number, since it uses as much as digits as its factorization.

1223454445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452.

The product of its digits is 76800, while the sum is 34.

The square root of 1223454445 is about 34977.9136742030. The cubic root of 1223454445 is about 1069.5372981222.

Adding to 1223454445 its reverse (5444543221), we get a palindrome (6667997666).

The spelling of 1223454445 in words is "one billion, two hundred twenty-three million, four hundred fifty-four thousand, four hundred forty-five".