1440140604 has 24 divisors (see below), whose sum is σ = 3840375168. Its totient is φ = 411468720.

The previous prime is 1440140599. The next prime is 1440140623. The reversal of 1440140604 is 4060410441.

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, 8572182 + ... + 8572349.

It is an arithmetic number, because the mean of its divisors is an integer number (160015632).

Almost surely, 2^1440140604 is an apocalyptic number.

1440140604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1440140604 is an abundant number, since it is smaller than the sum of its proper divisors (2400234564).

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

1440140604 is a wasteful number, since it uses less digits than its factorization.

1440140604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17144545 (or 17144543 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1440140604 is about 37949.1844971667. The cubic root of 1440140604 is about 1129.2799871916.

The spelling of 1440140604 in words is "one billion, four hundred forty million, one hundred forty thousand, six hundred four".