4040021263 has 2 divisors, whose sum is σ = 4040021264. Its totient is φ = 4040021262.

The previous prime is 4040021207. The next prime is 4040021299. The reversal of 4040021263 is 3621200404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4040021263 - 2²⁵ = 4006466831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040021563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020010631 + 2020010632.

It is an arithmetic number, because the mean of its divisors is an integer number (2020010632).

Almost surely, 2^4040021263 is an apocalyptic number.

4040021263 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040021263 is an equidigital number, since it uses as much as digits as its factorization.

4040021263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4040021263 is about 63561.1615925952. The cubic root of 4040021263 is about 1592.6776424986.

Adding to 4040021263 its reverse (3621200404), we get a palindrome (7661221667).

The spelling of 4040021263 in words is "four billion, forty million, twenty-one thousand, two hundred sixty-three".