4040230291 has 2 divisors, whose sum is σ = 4040230292. Its totient is φ = 4040230290.

The previous prime is 4040230289. The next prime is 4040230303. The reversal of 4040230291 is 1920320404.

4040230291 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4040230291 - 2¹ = 4040230289 is a prime.

Together with 4040230289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4040230391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020115145 + 2020115146.

It is an arithmetic number, because the mean of its divisors is an integer number (2020115146).

Almost surely, 2^4040230291 is an apocalyptic number.

4040230291 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040230291 is an equidigital number, since it uses as much as digits as its factorization.

4040230291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4040230291 is about 63562.8058773368. The cubic root of 4040230291 is about 1592.7051100505.

Adding to 4040230291 its reverse (1920320404), we get a palindrome (5960550695).

The spelling of 4040230291 in words is "four billion, forty million, two hundred thirty thousand, two hundred ninety-one".