6139047440 has 80 divisors (see below), whose sum is σ = 15043293120. Its totient is φ = 2323468800.

The previous prime is 6139047433. The next prime is 6139047479. The reversal of 6139047440 is 447409316.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 6139047394 and 6139047403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513415 + ... + 1517465.

It is an arithmetic number, because the mean of its divisors is an integer number (188041164).

Almost surely, 2^6139047440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6139047440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7521646560).

6139047440 is an abundant number, since it is smaller than the sum of its proper divisors (8904245680).

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

6139047440 is a wasteful number, since it uses less digits than its factorization.

6139047440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080 (or 5074 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 6139047440 is about 78352.0736164653. The cubic root of 6139047440 is about 1831.0505320135.

The spelling of 6139047440 in words is "six billion, one hundred thirty-nine million, forty-seven thousand, four hundred forty".