2139449312 has 96 divisors (see below), whose sum is σ = 5655412224. Its totient is φ = 769420800.

The previous prime is 2139449311. The next prime is 2139449317.

2139449312 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139449311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1364 + ... + 65427.

It is an arithmetic number, because the mean of its divisors is an integer number (58910544).

Almost surely, 2^2139449312 is an apocalyptic number.

2139449312 is a gapful number since it is divisible by the number (22) 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 2139449312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827706112).

2139449312 is an abundant number, since it is smaller than the sum of its proper divisors (3515962912).

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

2139449312 is a wasteful number, since it uses less digits than its factorization.

2139449312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66832 (or 66824 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 2139449312 is about 46254.1815623193. The cubic root of 2139449312 is about 1288.5481958465.

The spelling of 2139449312 in words is "two billion, one hundred thirty-nine million, four hundred forty-nine thousand, three hundred twelve".