1439048640 has 112 divisors (see below), whose sum is σ = 4837797792. Its totient is φ = 361168896.

The previous prime is 1439048617. The next prime is 1439048647. The reversal of 1439048640 is 468409341.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439048647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27769 + ... + 60408.

Almost surely, 2^1439048640 is an apocalyptic number.

1439048640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1439048640 is an abundant number, since it is smaller than the sum of its proper divisors (3398749152).

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

1439048640 is a wasteful number, since it uses less digits than its factorization.

1439048640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88214 (or 88204 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 1439048640 is about 37934.7945822829. The cubic root of 1439048640 is about 1128.9944954167.

The spelling of 1439048640 in words is "one billion, four hundred thirty-nine million, forty-eight thousand, six hundred forty".