404512432 has 20 divisors (see below), whose sum is σ = 824993080. Its totient is φ = 191611008.

The previous prime is 404512429. The next prime is 404512439. The reversal of 404512432 is 234215404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404512397 and 404512406.

It is not an unprimeable number, because it can be changed into a prime (404512439) 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 3 ways as a sum of consecutive naturals, for example, 665013 + ... + 665620.

It is an arithmetic number, because the mean of its divisors is an integer number (41249654).

Almost surely, 2^404512432 is an apocalyptic number.

It is an amenable number.

404512432 is an abundant number, since it is smaller than the sum of its proper divisors (420480648).

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

404512432 is a wasteful number, since it uses less digits than its factorization.

404512432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330660 (or 1330654 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 404512432 is about 20112.4944251080. The cubic root of 404512432 is about 739.5666028073.

Adding to 404512432 its reverse (234215404), we get a palindrome (638727836).

The spelling of 404512432 in words is "four hundred four million, five hundred twelve thousand, four hundred thirty-two".