2140440404 has 12 divisors (see below), whose sum is σ = 3816446004. Its totient is φ = 1050027264.

The previous prime is 2140440391. The next prime is 2140440433. The reversal of 2140440404 is 4040440412.

It can be written as a sum of positive squares in 2 ways, for example, as 1100248900 + 1040191504 = 33170^2 + 32252^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2140440404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5047997 + ... + 5048420.

It is an arithmetic number, because the mean of its divisors is an integer number (318037167).

Almost surely, 2^2140440404 is an apocalyptic number.

It is an amenable number.

2140440404 is a deficient number, since it is larger than the sum of its proper divisors (1676005600).

2140440404 is a wasteful number, since it uses less digits than its factorization.

2140440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096474 (or 10096472 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2140440404 is about 46264.8938613286. The cubic root of 2140440404 is about 1288.7471368626.

Adding to 2140440404 its reverse (4040440412), we get a palindrome (6180880816).

The spelling of 2140440404 in words is "two billion, one hundred forty million, four hundred forty thousand, four hundred four".