40040020459 has 2 divisors, whose sum is σ = 40040020460. Its totient is φ = 40040020458.

The previous prime is 40040020421. The next prime is 40040020513. The reversal of 40040020459 is 95402004004.

40040020459 is digitally balanced in base 2, 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 40040020459 - 2⁷ = 40040020331 is a prime.

It is not a weakly prime, because it can be changed into another prime (40040020259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20020010229 + 20020010230.

It is an arithmetic number, because the mean of its divisors is an integer number (20020010230).

Almost surely, 2^40040020459 is an apocalyptic number.

40040020459 is a deficient number, since it is larger than the sum of its proper divisors (1).

40040020459 is an equidigital number, since it uses as much as digits as its factorization.

40040020459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 40040020459 in words is "forty billion, forty million, twenty thousand, four hundred fifty-nine".