1111401440 has 48 divisors (see below), whose sum is σ = 2629609920. Its totient is φ = 443896320.

The previous prime is 1111401439. The next prime is 1111401463. The reversal of 1111401440 is 441041111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110210 + ... + 119870.

It is an arithmetic number, because the mean of its divisors is an integer number (54783540).

Almost surely, 2^1111401440 is an apocalyptic number.

1111401440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111401440 is an abundant number, since it is smaller than the sum of its proper divisors (1518208480).

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

1111401440 is an equidigital number, since it uses as much as digits as its factorization.

1111401440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10395 (or 10387 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1111401440 is about 33337.6879822222. The cubic root of 1111401440 is about 1035.8343727312.

Adding to 1111401440 its reverse (441041111), we get a palindrome (1552442551).

The spelling of 1111401440 in words is "one billion, one hundred eleven million, four hundred one thousand, four hundred forty".