2939831388 has 288 divisors, whose sum is σ = 8854272000. Its totient is φ = 841142016.

The previous prime is 2939831387. The next prime is 2939831393. The reversal of 2939831388 is 8831389392.

It is a happy number.

2939831388 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 Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2939831383) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19730338 + ... + 19730486.

It is an arithmetic number, because the mean of its divisors is an integer number (30744000).

Almost surely, 2^2939831388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2939831388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4427136000).

2939831388 is an abundant number, since it is smaller than the sum of its proper divisors (5914440612).

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

2939831388 is a wasteful number, since it uses less digits than its factorization.

2939831388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 237 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 2939831388 is about 54220.2119877818. The cubic root of 2939831388 is about 1432.5423643621.

The spelling of 2939831388 in words is "two billion, nine hundred thirty-nine million, eight hundred thirty-one thousand, three hundred eighty-eight".