1223444444 has 6 divisors (see below), whose sum is σ = 2141027784. Its totient is φ = 611722220.

The previous prime is 1223444407. The next prime is 1223444483. The reversal of 1223444444 is 4444443221.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1223444444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152930552 + ... + 152930559.

It is an arithmetic number, because the mean of its divisors is an integer number (356837964).

Almost surely, 2^1223444444 is an apocalyptic number.

It is an amenable number.

1223444444 is a deficient number, since it is larger than the sum of its proper divisors (917583340).

1223444444 is a wasteful number, since it uses less digits than its factorization.

1223444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305861115 (or 305861113 counting only the distinct ones).

The product of its digits is 49152, while the sum is 32.

The square root of 1223444444 is about 34977.7707122681. The cubic root of 1223444444 is about 1069.5343838408.

Adding to 1223444444 its reverse (4444443221), we get a palindrome (5667887665).

The spelling of 1223444444 in words is "one billion, two hundred twenty-three million, four hundred forty-four thousand, four hundred forty-four".