404134556 has 72 divisors (see below), whose sum is σ = 844947936. Its totient is φ = 168591360.

The previous prime is 404134537. The next prime is 404134559. The reversal of 404134556 is 655431404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404134559) 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 23 ways as a sum of consecutive naturals, for example, 1572380 + ... + 1572636.

It is an arithmetic number, because the mean of its divisors is an integer number (11735388).

Almost surely, 2^404134556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404134556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422473968).

404134556 is an abundant number, since it is smaller than the sum of its proper divisors (440813380).

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

404134556 is a wasteful number, since it uses less digits than its factorization.

404134556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 404134556 is about 20103.0981691878. The cubic root of 404134556 is about 739.3362419140.

The spelling of 404134556 in words is "four hundred four million, one hundred thirty-four thousand, five hundred fifty-six".