404540132 has 12 divisors (see below), whose sum is σ = 712185600. Its totient is φ = 201058536.

The previous prime is 404540117. The next prime is 404540137. The reversal of 404540132 is 231045404.

It is a junction number, because it is equal to n+sod(n) for n = 404540098 and 404540107.

It is not an unprimeable number, because it can be changed into a prime (404540137) 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, 302132 + ... + 303467.

It is an arithmetic number, because the mean of its divisors is an integer number (59348800).

Almost surely, 2^404540132 is an apocalyptic number.

It is an amenable number.

404540132 is a deficient number, since it is larger than the sum of its proper divisors (307645468).

404540132 is a wasteful number, since it uses less digits than its factorization.

404540132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605770 (or 605768 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 404540132 is about 20113.1830399865. The cubic root of 404540132 is about 739.5834836460.

Adding to 404540132 its reverse (231045404), we get a palindrome (635585536).

The spelling of 404540132 in words is "four hundred four million, five hundred forty thousand, one hundred thirty-two".