404423406 has 48 divisors (see below), whose sum is σ = 899683200. Its totient is φ = 131247504.

The previous prime is 404423377. The next prime is 404423407. The reversal of 404423406 is 604324404.

It is a self number, because there is not a number n which added to its sum of digits gives 404423406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404423407) 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 in 23 ways as a sum of consecutive naturals, for example, 111855 + ... + 115413.

It is an arithmetic number, because the mean of its divisors is an integer number (18743400).

Almost surely, 2^404423406 is an apocalyptic number.

404423406 is an abundant number, since it is smaller than the sum of its proper divisors (495259794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404423406 is a wasteful number, since it uses less digits than its factorization.

404423406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 404423406 is about 20110.2811019637. The cubic root of 404423406 is about 739.5123436697.

The spelling of 404423406 in words is "four hundred four million, four hundred twenty-three thousand, four hundred six".