4139639808 has 176 divisors, whose sum is σ = 12064264704. Its totient is φ = 1256325120.

The previous prime is 4139639807. The next prime is 4139639831. The reversal of 4139639808 is 8089369314.

4139639808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139639807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617666 + ... + 1620222.

Almost surely, 2^4139639808 is an apocalyptic number.

4139639808 is a gapful number since it is divisible by the number (48) 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 4139639808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6032132352).

4139639808 is an abundant number, since it is smaller than the sum of its proper divisors (7924624896).

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

4139639808 is a wasteful number, since it uses less digits than its factorization.

4139639808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 4139639808 is about 64340.0327012662. The cubic root of 4139639808 is about 1605.6622051748.

The spelling of 4139639808 in words is "four billion, one hundred thirty-nine million, six hundred thirty-nine thousand, eight hundred eight".