4040310221 has 4 divisors (see below), whose sum is σ = 4043237244. Its totient is φ = 4037383200.

The previous prime is 4040310199. The next prime is 4040310269. The reversal of 4040310221 is 1220130404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1189284196 + 2851026025 = 34486^2 + 53395^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040310221 - 2²² = 4036115917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4040310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040310721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461440 + ... + 1464201.

It is an arithmetic number, because the mean of its divisors is an integer number (1010809311).

Almost surely, 2^4040310221 is an apocalyptic number.

It is an amenable number.

4040310221 is a deficient number, since it is larger than the sum of its proper divisors (2927023).

4040310221 is a wasteful number, since it uses less digits than its factorization.

4040310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927022.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4040310221 is about 63563.4346224305. The cubic root of 4040310221 is about 1592.7156130887.

Adding to 4040310221 its reverse (1220130404), we get a palindrome (5260440625).

The spelling of 4040310221 in words is "four billion, forty million, three hundred ten thousand, two hundred twenty-one".