404843436 has 18 divisors (see below), whose sum is σ = 1023354332. Its totient is φ = 134947800.

The previous prime is 404843429. The next prime is 404843437. The reversal of 404843436 is 634348404.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11245651 = 404843436 / (4 + 0 + 4 + 8 + 4 + 3 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 404843436.

It is not an unprimeable number, because it can be changed into a prime (404843437) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5622790 + ... + 5622861.

Almost surely, 2^404843436 is an apocalyptic number.

It is an amenable number.

404843436 is an abundant number, since it is smaller than the sum of its proper divisors (618510896).

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

404843436 is a wasteful number, since it uses less digits than its factorization.

404843436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11245661 (or 11245656 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 404843436 is about 20120.7215576380. The cubic root of 404843436 is about 739.7682717330.

The spelling of 404843436 in words is "four hundred four million, eight hundred forty-three thousand, four hundred thirty-six".