4400421131 has 16 divisors (see below), whose sum is σ = 4533408000. Its totient is φ = 4269751200.

The previous prime is 4400421119. The next prime is 4400421143. The reversal of 4400421131 is 1311240044.

4400421131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4400421119) and next prime (4400421143).

It is a cyclic number.

It is not a de Polignac number, because 4400421131 - 2¹⁴ = 4400404747 is a prime.

It is a super-2 number, since 2×4400421131² = 38727412260302638322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4400421101) 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, 1536641 + ... + 1539501.

It is an arithmetic number, because the mean of its divisors is an integer number (283338000).

Almost surely, 2^4400421131 is an apocalyptic number.

4400421131 is a deficient number, since it is larger than the sum of its proper divisors (132986869).

4400421131 is a wasteful number, since it uses less digits than its factorization.

4400421131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4400421131 is about 66335.6701255064. The cubic root of 4400421131 is about 1638.6948185617.

Adding to 4400421131 its reverse (1311240044), we get a palindrome (5711661175).

The spelling of 4400421131 in words is "four billion, four hundred million, four hundred twenty-one thousand, one hundred thirty-one".