404123432 has 32 divisors (see below), whose sum is σ = 791743680. Its totient is φ = 193015680.

The previous prime is 404123393. The next prime is 404123449. The reversal of 404123432 is 234321404.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 404123398 and 404123407.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 271763 + ... + 273245.

It is an arithmetic number, because the mean of its divisors is an integer number (24741990).

Almost surely, 2^404123432 is an apocalyptic number.

It is an amenable number.

404123432 is a deficient number, since it is larger than the sum of its proper divisors (387620248).

404123432 is a wasteful number, since it uses less digits than its factorization.

404123432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2989 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404123432 is about 20102.8214935118. The cubic root of 404123432 is about 739.3294583220.

Adding to 404123432 its reverse (234321404), we get a palindrome (638444836).

The spelling of 404123432 in words is "four hundred four million, one hundred twenty-three thousand, four hundred thirty-two".