1140487440 has 40 divisors (see below), whose sum is σ = 3535511808. Its totient is φ = 304129920.

The previous prime is 1140487429. The next prime is 1140487463. The reversal of 1140487440 is 447840411.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2375776 + ... + 2376255.

Almost surely, 2^1140487440 is an apocalyptic number.

1140487440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140487440 is an abundant number, since it is smaller than the sum of its proper divisors (2395024368).

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

1140487440 is a wasteful number, since it uses less digits than its factorization.

1140487440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752047 (or 4752041 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 1140487440 is about 33771.1036242525. The cubic root of 1140487440 is about 1044.7927948569.

The spelling of 1140487440 in words is "one billion, one hundred forty million, four hundred eighty-seven thousand, four hundred forty".