1123444440 has 96 divisors (see below), whose sum is σ = 3658964400. Its totient is φ = 298947840.

The previous prime is 1123444423. The next prime is 1123444451. The reversal of 1123444440 is 444443211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180175 + ... + 186305.

Almost surely, 2^1123444440 is an apocalyptic number.

1123444440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829482200).

1123444440 is an abundant number, since it is smaller than the sum of its proper divisors (2535519960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123444440 is a wasteful number, since it uses less digits than its factorization.

1123444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6657 (or 6650 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1123444440 is about 33517.8227216506. The cubic root of 1123444440 is about 1039.5623281642.

Adding to 1123444440 its reverse (444443211), we get a palindrome (1567887651).

The spelling of 1123444440 in words is "one billion, one hundred twenty-three million, four hundred forty-four thousand, four hundred forty".