404811836 has 48 divisors (see below), whose sum is σ = 840473088. Its totient is φ = 168177600.

The previous prime is 404811829. The next prime is 404811851. The reversal of 404811836 is 638118404.

It is a junction number, because it is equal to n+sod(n) for n = 404811796 and 404811805.

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 15 ways as a sum of consecutive naturals, for example, 55481 + ... + 62351.

It is an arithmetic number, because the mean of its divisors is an integer number (17509856).

Almost surely, 2^404811836 is an apocalyptic number.

It is an amenable number.

404811836 is an abundant number, since it is smaller than the sum of its proper divisors (435661252).

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

404811836 is a wasteful number, since it uses less digits than its factorization.

404811836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002 (or 7000 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 404811836 is about 20119.9362822053. The cubic root of 404811836 is about 739.7490237278.

The spelling of 404811836 in words is "four hundred four million, eight hundred eleven thousand, eight hundred thirty-six".