4139129808 has 240 divisors, whose sum is σ = 13878236736. Its totient is φ = 1180293120.

The previous prime is 4139129779. The next prime is 4139129809. The reversal of 4139129808 is 8089219314.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139129809) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 724210 + ... + 729902.

Almost surely, 2^4139129808 is an apocalyptic number.

4139129808 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 4139129808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6939118368).

4139129808 is an abundant number, since it is smaller than the sum of its proper divisors (9739106928).

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

4139129808 is a wasteful number, since it uses less digits than its factorization.

4139129808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744 (or 5726 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 4139129808 is about 64336.0692613405. The cubic root of 4139129808 is about 1605.5962637408.

The spelling of 4139129808 in words is "four billion, one hundred thirty-nine million, one hundred twenty-nine thousand, eight hundred eight".