404380423 has 2 divisors, whose sum is σ = 404380424. Its totient is φ = 404380422.

The previous prime is 404380409. The next prime is 404380447. The reversal of 404380423 is 324083404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404380423 - 2²⁵ = 370825991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404380391 and 404380400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404380463) 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, 202190211 + 202190212.

It is an arithmetic number, because the mean of its divisors is an integer number (202190212).

Almost surely, 2^404380423 is an apocalyptic number.

404380423 is a deficient number, since it is larger than the sum of its proper divisors (1).

404380423 is an equidigital number, since it uses as much as digits as its factorization.

404380423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 404380423 is about 20109.2123913394. The cubic root of 404380423 is about 739.4861437476.

The spelling of 404380423 in words is "four hundred four million, three hundred eighty thousand, four hundred twenty-three".