4040323439 has 2 divisors, whose sum is σ = 4040323440. Its totient is φ = 4040323438.

The previous prime is 4040323429. The next prime is 4040323487. The reversal of 4040323439 is 9343230404.

4040323439 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 4040323439 - 2²⁴ = 4023546223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040323409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020161719 + 2020161720.

It is an arithmetic number, because the mean of its divisors is an integer number (2020161720).

Almost surely, 2^4040323439 is an apocalyptic number.

4040323439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040323439 is an equidigital number, since it uses as much as digits as its factorization.

4040323439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 4040323439 is about 63563.5385972178. The cubic root of 4040323439 is about 1592.7173499597.

The spelling of 4040323439 in words is "four billion, forty million, three hundred twenty-three thousand, four hundred thirty-nine".