4140440221 has 4 divisors (see below), whose sum is σ = 4179136032. Its totient is φ = 4101744412.

The previous prime is 4140440173. The next prime is 4140440237. The reversal of 4140440221 is 1220440414.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4140440221 - 2⁷ = 4140440093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4140440192 and 4140440201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4140440251) 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, 19347745 + ... + 19347958.

It is an arithmetic number, because the mean of its divisors is an integer number (1044784008).

Almost surely, 2^4140440221 is an apocalyptic number.

It is an amenable number.

4140440221 is a deficient number, since it is larger than the sum of its proper divisors (38695811).

4140440221 is a wasteful number, since it uses less digits than its factorization.

4140440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38695810.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 4140440221 is about 64346.2525793072. The cubic root of 4140440221 is about 1605.7656851988.

Adding to 4140440221 its reverse (1220440414), we get a palindrome (5360880635).

The spelling of 4140440221 in words is "four billion, one hundred forty million, four hundred forty thousand, two hundred twenty-one".