404854605 has 40 divisors (see below), whose sum is σ = 730719000. Its totient is φ = 214441344.

The previous prime is 404854559. The next prime is 404854627. The reversal of 404854605 is 506458404.

404854605 is a `hidden beast` number, since 4 + 0 + 48 + 5 + 4 + 605 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13883076 + 390971529 = 3726^2 + 19773^2 .

It is not a de Polignac number, because 404854605 - 2²³ = 396465997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404854605.

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 39 ways as a sum of consecutive naturals, for example, 56991 + ... + 63699.

It is an arithmetic number, because the mean of its divisors is an integer number (18267975).

Almost surely, 2^404854605 is an apocalyptic number.

404854605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404854605 is a deficient number, since it is larger than the sum of its proper divisors (325864395).

404854605 is a wasteful number, since it uses less digits than its factorization.

404854605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875 (or 6866 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 404854605 is about 20120.9991054122. Note that the first 3 decimals coincide. The cubic root of 404854605 is about 739.7750746886.

Adding to 404854605 its sum of digits (36), we get a square (404854641 = 20121²).

It can be divided in two parts, 4048 and 54605, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 404854605 in words is "four hundred four million, eight hundred fifty-four thousand, six hundred five".