1440042984 has 48 divisors (see below), whose sum is σ = 4105389600. Its totient is φ = 454749984.

The previous prime is 1440042971. The next prime is 1440042991. The reversal of 1440042984 is 4892400441.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 524964 + ... + 527699.

It is an arithmetic number, because the mean of its divisors is an integer number (85528950).

Almost surely, 2^1440042984 is an apocalyptic number.

It is an amenable number.

1440042984 is an abundant number, since it is smaller than the sum of its proper divisors (2665346616).

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

1440042984 is a wasteful number, since it uses less digits than its factorization.

1440042984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052694 (or 1052687 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1440042984 is about 37947.8982817231. The cubic root of 1440042984 is about 1129.2544705156.

The spelling of 1440042984 in words is "one billion, four hundred forty million, forty-two thousand, nine hundred eighty-four".