4004431132 has 72 divisors (see below), whose sum is σ = 7872648896. Its totient is φ = 1771200000.

The previous prime is 4004431121. The next prime is 4004431139. The reversal of 4004431132 is 2311344004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004431139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5331757 + ... + 5332507.

Almost surely, 2^4004431132 is an apocalyptic number.

It is an amenable number.

4004431132 is a deficient number, since it is larger than the sum of its proper divisors (3868217764).

4004431132 is a wasteful number, since it uses less digits than its factorization.

4004431132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4004431132 is about 63280.5746813349. The cubic root of 4004431132 is about 1587.9870009532.

Adding to 4004431132 its reverse (2311344004), we get a palindrome (6315775136).

The spelling of 4004431132 in words is "four billion, four million, four hundred thirty-one thousand, one hundred thirty-two".