404331132 has 12 divisors (see below), whose sum is σ = 943439336. Its totient is φ = 134777040.

The previous prime is 404331127. The next prime is 404331133. The reversal of 404331132 is 231133404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 404331099 and 404331108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404331133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16847119 + ... + 16847142.

Almost surely, 2^404331132 is an apocalyptic number.

It is an amenable number.

404331132 is an abundant number, since it is smaller than the sum of its proper divisors (539108204).

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

404331132 is a wasteful number, since it uses less digits than its factorization.

404331132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33694268 (or 33694266 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 404331132 is about 20107.9867714299. The cubic root of 404331132 is about 739.4560965523.

Adding to 404331132 its reverse (231133404), we get a palindrome (635464536).

The spelling of 404331132 in words is "four hundred four million, three hundred thirty-one thousand, one hundred thirty-two".