4040430656 has 14 divisors (see below), whose sum is σ = 8017729710. Its totient is φ = 2020215296.

The previous prime is 4040430643. The next prime is 4040430659. The reversal of 4040430656 is 6560340404.

It can be written as a sum of positive squares in only one way, i.e., 3201749056 + 838681600 = 56584^2 + 28960^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (4040430659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31565801 + ... + 31565928.

Almost surely, 2^4040430656 is an apocalyptic number.

It is an amenable number.

4040430656 is a deficient number, since it is larger than the sum of its proper divisors (3977299054).

4040430656 is an equidigital number, since it uses as much as digits as its factorization.

4040430656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63131741 (or 63131731 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 4040430656 is about 63564.3819760721. The cubic root of 4040430656 is about 1592.7314383421.

The spelling of 4040430656 in words is "four billion, forty million, four hundred thirty thousand, six hundred fifty-six".