404406846 has 48 divisors (see below), whose sum is σ = 939556800. Its totient is φ = 125259264.

The previous prime is 404406823. The next prime is 404406857. The reversal of 404406846 is 648604404.

It is a self number, because there is not a number n which added to its sum of digits gives 404406846.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 15810 + ... + 32538.

It is an arithmetic number, because the mean of its divisors is an integer number (19574100).

Almost surely, 2^404406846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404406846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469778400).

404406846 is an abundant number, since it is smaller than the sum of its proper divisors (535149954).

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

404406846 is a wasteful number, since it uses less digits than its factorization.

404406846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16833 (or 16830 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 404406846 is about 20109.8693680491. The cubic root of 404406846 is about 739.5022498824.

The spelling of 404406846 in words is "four hundred four million, four hundred six thousand, eight hundred forty-six".