4040432540 has 96 divisors (see below), whose sum is σ = 9229248000. Its totient is φ = 1481179392.

The previous prime is 4040432497. The next prime is 4040432579. The reversal of 4040432540 is 452340404.

4040432540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×4040432540² = 32650190220581703200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1853171 + ... + 1855349.

It is an arithmetic number, because the mean of its divisors is an integer number (96138000).

Almost surely, 2^4040432540 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 4040432540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4614624000).

4040432540 is an abundant number, since it is smaller than the sum of its proper divisors (5188815460).

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

4040432540 is a wasteful number, since it uses less digits than its factorization.

4040432540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 2377 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 4040432540 is about 63564.3967956906. The cubic root of 4040432540 is about 1592.7316858987.

Adding to 4040432540 its reverse (452340404), we get a palindrome (4492772944).

The spelling of 4040432540 in words is "four billion, forty million, four hundred thirty-two thousand, five hundred forty".