404204039 has 2 divisors, whose sum is σ = 404204040. Its totient is φ = 404204038.

The previous prime is 404204011. The next prime is 404204111. The reversal of 404204039 is 930402404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404204039 - 2²⁰ = 403155463 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 404203999 and 404204017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404200039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202102019 + 202102020.

It is an arithmetic number, because the mean of its divisors is an integer number (202102020).

Almost surely, 2^404204039 is an apocalyptic number.

404204039 is a deficient number, since it is larger than the sum of its proper divisors (1).

404204039 is an equidigital number, since it uses as much as digits as its factorization.

404204039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 404204039 is about 20104.8262613732. The cubic root of 404204039 is about 739.3786109349.

The spelling of 404204039 in words is "four hundred four million, two hundred four thousand, thirty-nine".