4139239220 has 24 divisors (see below), whose sum is σ = 9203720904. Its totient is φ = 1558301696.

The previous prime is 4139239213. The next prime is 4139239231. The reversal of 4139239220 is 229329314.

It can be written as a sum of positive squares in 4 ways, for example, as 355020964 + 3784218256 = 18842^2 + 61516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6086777 + ... + 6087456.

It is an arithmetic number, because the mean of its divisors is an integer number (383488371).

Almost surely, 2^4139239220 is an apocalyptic number.

It is an amenable number.

4139239220 is an abundant number, since it is smaller than the sum of its proper divisors (5064481684).

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

4139239220 is a wasteful number, since it uses less digits than its factorization.

4139239220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174259 (or 12174257 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 4139239220 is about 64336.9195718912. The cubic root of 4139239220 is about 1605.6104108328.

The spelling of 4139239220 in words is "four billion, one hundred thirty-nine million, two hundred thirty-nine thousand, two hundred twenty".