404284109 has 4 divisors (see below), whose sum is σ = 425562240. Its totient is φ = 383005980.

The previous prime is 404284081. The next prime is 404284129. The reversal of 404284109 is 901482404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404284109 - 2²⁴ = 387506893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404284129) 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 3 ways as a sum of consecutive naturals, for example, 10639037 + ... + 10639074.

It is an arithmetic number, because the mean of its divisors is an integer number (106390560).

Almost surely, 2^404284109 is an apocalyptic number.

It is an amenable number.

404284109 is a deficient number, since it is larger than the sum of its proper divisors (21278131).

404284109 is a wasteful number, since it uses less digits than its factorization.

404284109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21278130.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 404284109 is about 20106.8174756723. The cubic root of 404284109 is about 739.4274296262.

The spelling of 404284109 in words is "four hundred four million, two hundred eighty-four thousand, one hundred nine".