3959895138 has 16 divisors (see below), whose sum is σ = 7920464160. Its totient is φ = 1319852736.

The previous prime is 3959895133. The next prime is 3959895167. The reversal of 3959895138 is 8315989593.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3959895133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80778 + ... + 120186.

It is an arithmetic number, because the mean of its divisors is an integer number (495029010).

Almost surely, 2^3959895138 is an apocalyptic number.

3959895138 is an abundant number, since it is smaller than the sum of its proper divisors (3960569022).

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

3959895138 is a wasteful number, since it uses less digits than its factorization.

3959895138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56161.

The product of its digits is 10497600, while the sum is 60.

The square root of 3959895138 is about 62927.6977014097. The cubic root of 3959895138 is about 1582.0780138114.

The spelling of 3959895138 in words is "three billion, nine hundred fifty-nine million, eight hundred ninety-five thousand, one hundred thirty-eight".