2199939924 has 144 divisors (see below), whose sum is σ = 6558720000. Its totient is φ = 561375360.

The previous prime is 2199939923. The next prime is 2199939967. The reversal of 2199939924 is 4299399912.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199939923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437577 + ... + 442575.

Almost surely, 2^2199939924 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 2199939924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3279360000).

2199939924 is an abundant number, since it is smaller than the sum of its proper divisors (4358780076).

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

2199939924 is a wasteful number, since it uses less digits than its factorization.

2199939924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070 (or 5055 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 57.

The square root of 2199939924 is about 46903.5171815505. The cubic root of 2199939924 is about 1300.5796082085.

The spelling of 2199939924 in words is "two billion, one hundred ninety-nine million, nine hundred thirty-nine thousand, nine hundred twenty-four".