404423340 has 24 divisors (see below), whose sum is σ = 1132385520. Its totient is φ = 107846208.

The previous prime is 404423333. The next prime is 404423363. The reversal of 404423340 is 43324404.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 404423340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3370135 + ... + 3370254.

It is an arithmetic number, because the mean of its divisors is an integer number (47182730).

Almost surely, 2^404423340 is an apocalyptic number.

It is an amenable number.

404423340 is an abundant number, since it is smaller than the sum of its proper divisors (727962180).

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

404423340 is a wasteful number, since it uses less digits than its factorization.

404423340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740401 (or 6740399 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 404423340 is about 20110.2794610120. The cubic root of 404423340 is about 739.5123034414.

Adding to 404423340 its reverse (43324404), we get a palindrome (447747744).

The spelling of 404423340 in words is "four hundred four million, four hundred twenty-three thousand, three hundred forty".