1111100440 has 16 divisors (see below), whose sum is σ = 2499976080. Its totient is φ = 444440160.

The previous prime is 1111100423. The next prime is 1111100447. The reversal of 1111100440 is 440011111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111100440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111100447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13888716 + ... + 13888795.

It is an arithmetic number, because the mean of its divisors is an integer number (156248505).

Almost surely, 2^1111100440 is an apocalyptic number.

1111100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111100440 is an abundant number, since it is smaller than the sum of its proper divisors (1388875640).

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

1111100440 is a wasteful number, since it uses less digits than its factorization.

1111100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27777522 (or 27777518 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1111100440 is about 33333.1732662823. The cubic root of 1111100440 is about 1035.7408528783.

Adding to 1111100440 its reverse (440011111), we get a palindrome (1551111551).

The spelling of 1111100440 in words is "one billion, one hundred eleven million, one hundred thousand, four hundred forty".