404346546 has 64 divisors (see below), whose sum is σ = 922406400. Its totient is φ = 131234688.

The previous prime is 404346539. The next prime is 404346559. The reversal of 404346546 is 645643404.

It is a super-2 number, since 2×404346546² = 326992258524260232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404346546.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794140 + ... + 794648.

It is an arithmetic number, because the mean of its divisors is an integer number (14412600).

Almost surely, 2^404346546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404346546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461203200).

404346546 is an abundant number, since it is smaller than the sum of its proper divisors (518059854).

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

404346546 is a wasteful number, since it uses less digits than its factorization.

404346546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 404346546 is about 20108.3700483157. The cubic root of 404346546 is about 739.4654930020.

The spelling of 404346546 in words is "four hundred four million, three hundred forty-six thousand, five hundred forty-six".