1100244440 has 32 divisors (see below), whose sum is σ = 2533124880. Its totient is φ = 429862272.

The previous prime is 1100244413. The next prime is 1100244461. The reversal of 1100244440 is 444420011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318119 + ... + 321558.

Almost surely, 2^1100244440 is an apocalyptic number.

1100244440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100244440 is an abundant number, since it is smaller than the sum of its proper divisors (1432880440).

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

1100244440 is a wasteful number, since it uses less digits than its factorization.

1100244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639731 (or 639727 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1100244440 is about 33169.9327705077. The cubic root of 1100244440 is about 1032.3565735966.

Adding to 1100244440 its reverse (444420011), we get a palindrome (1544664451).

The spelling of 1100244440 in words is "one billion, one hundred million, two hundred forty-four thousand, four hundred forty".