1439320140 has 72 divisors (see below), whose sum is σ = 4384336320. Its totient is φ = 382201344.

The previous prime is 1439320133. The next prime is 1439320159. The reversal of 1439320140 is 410239341.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26292 + ... + 59748.

It is an arithmetic number, because the mean of its divisors is an integer number (60893560).

Almost surely, 2^1439320140 is an apocalyptic number.

1439320140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1439320140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2192168160).

1439320140 is an abundant number, since it is smaller than the sum of its proper divisors (2945016180).

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

1439320140 is a wasteful number, since it uses less digits than its factorization.

1439320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33711 (or 33706 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1439320140 is about 37938.3729224119. The cubic root of 1439320140 is about 1129.0654920280.

Adding to 1439320140 its reverse (410239341), we get a palindrome (1849559481).

The spelling of 1439320140 in words is "one billion, four hundred thirty-nine million, three hundred twenty thousand, one hundred forty".