404447406 has 32 divisors (see below), whose sum is σ = 884193408. Its totient is φ = 122315040.

The previous prime is 404447353. The next prime is 404447413. The reversal of 404447406 is 604744404.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 15 ways as a sum of consecutive naturals, for example, 28660 + ... + 40376.

It is an arithmetic number, because the mean of its divisors is an integer number (27631044).

Almost surely, 2^404447406 is an apocalyptic number.

404447406 is an abundant number, since it is smaller than the sum of its proper divisors (479746002).

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

404447406 is a wasteful number, since it uses less digits than its factorization.

404447406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12256.

The product of its (nonzero) digits is 43008, while the sum is 33.

The square root of 404447406 is about 20110.8778028210. The cubic root of 404447406 is about 739.5269718580.

The spelling of 404447406 in words is "four hundred four million, four hundred forty-seven thousand, four hundred six".