4139338881 has 4 divisors (see below), whose sum is σ = 5519118512. Its totient is φ = 2759559252.

The previous prime is 4139338873. The next prime is 4139338883. The reversal of 4139338881 is 1888339314.

4139338881 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4139338881 - 2³ = 4139338873 is a prime.

It is a super-2 number, since 2×4139338881² = 34268252743516664322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4139338881.

It is not an unprimeable number, because it can be changed into a prime (4139338883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689889811 + ... + 689889816.

It is an arithmetic number, because the mean of its divisors is an integer number (1379779628).

Almost surely, 2^4139338881 is an apocalyptic number.

It is an amenable number.

4139338881 is a deficient number, since it is larger than the sum of its proper divisors (1379779631).

4139338881 is a wasteful number, since it uses less digits than its factorization.

4139338881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379779630.

The product of its digits is 497664, while the sum is 48.

The square root of 4139338881 is about 64337.6940914111. The cubic root of 4139338881 is about 1605.6232968928.

The spelling of 4139338881 in words is "four billion, one hundred thirty-nine million, three hundred thirty-eight thousand, eight hundred eighty-one".