2123404404 has 24 divisors (see below), whose sum is σ = 5405029728. Its totient is φ = 643455840.

The previous prime is 2123404351. The next prime is 2123404411. The reversal of 2123404404 is 4044043212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8043067 + ... + 8043330.

It is an arithmetic number, because the mean of its divisors is an integer number (225209572).

Almost surely, 2^2123404404 is an apocalyptic number.

It is an amenable number.

2123404404 is an abundant number, since it is smaller than the sum of its proper divisors (3281625324).

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

2123404404 is a wasteful number, since it uses less digits than its factorization.

2123404404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16086415 (or 16086413 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2123404404 is about 46080.4123679465. The cubic root of 2123404404 is about 1285.3189322766.

Adding to 2123404404 its reverse (4044043212), we get a palindrome (6167447616).

The spelling of 2123404404 in words is "two billion, one hundred twenty-three million, four hundred four thousand, four hundred four".