404624406 has 8 divisors (see below), whose sum is σ = 809248824. Its totient is φ = 134874800.

The previous prime is 404624393. The next prime is 404624447. The reversal of 404624406 is 604426404.

It is a sphenic number, since it is the product of 3 distinct primes.

404624406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33718695 + ... + 33718706.

It is an arithmetic number, because the mean of its divisors is an integer number (101156103).

Almost surely, 2^404624406 is an apocalyptic number.

404624406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

404624406 is a wasteful number, since it uses less digits than its factorization.

404624406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67437406.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 404624406 is about 20115.2779250002. The cubic root of 404624406 is about 739.6348368790.

The spelling of 404624406 in words is "four hundred four million, six hundred twenty-four thousand, four hundred six".