4040434221 has 8 divisors (see below), whose sum is σ = 5417010144. Its totient is φ = 2678740560.

The previous prime is 4040434213. The next prime is 4040434231. The reversal of 4040434221 is 1224340404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4040434221 - 2³ = 4040434213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4040434191 and 4040434200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040434231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3719931 + ... + 3721016.

It is an arithmetic number, because the mean of its divisors is an integer number (677126268).

Almost surely, 2^4040434221 is an apocalyptic number.

It is an amenable number.

4040434221 is a deficient number, since it is larger than the sum of its proper divisors (1376575923).

4040434221 is a wasteful number, since it uses less digits than its factorization.

4040434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7441131.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4040434221 is about 63564.4100185001. The cubic root of 4040434221 is about 1592.7319067811.

Adding to 4040434221 its reverse (1224340404), we get a palindrome (5264774625).

The spelling of 4040434221 in words is "four billion, forty million, four hundred thirty-four thousand, two hundred twenty-one".