2139559844 has 24 divisors (see below), whose sum is σ = 3811584000. Its totient is φ = 1050678720.

The previous prime is 2139559841. The next prime is 2139559853. The reversal of 2139559844 is 4489559312.

It is a junction number, because it is equal to n+sod(n) for n = 2139559792 and 2139559801.

It is not an unprimeable number, because it can be changed into a prime (2139559841) 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, 42632 + ... + 78080.

It is an arithmetic number, because the mean of its divisors is an integer number (158816000).

Almost surely, 2^2139559844 is an apocalyptic number.

It is an amenable number.

2139559844 is a deficient number, since it is larger than the sum of its proper divisors (1672024156).

2139559844 is a wasteful number, since it uses less digits than its factorization.

2139559844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35723 (or 35721 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The square root of 2139559844 is about 46255.3763794005. The cubic root of 2139559844 is about 1288.5703858801.

The spelling of 2139559844 in words is "two billion, one hundred thirty-nine million, five hundred fifty-nine thousand, eight hundred forty-four".