404044131 has 4 divisors (see below), whose sum is σ = 538725512. Its totient is φ = 269362752.

The previous prime is 404044129. The next prime is 404044133. The reversal of 404044131 is 131440404.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (404044129) and next prime (404044133).

It is not a de Polignac number, because 404044131 - 2¹ = 404044129 is a prime.

It is a super-2 number, since 2×404044131² = 326503319591090322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404044098 and 404044107.

It is not an unprimeable number, because it can be changed into a prime (404044133) 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, 67340686 + ... + 67340691.

It is an arithmetic number, because the mean of its divisors is an integer number (134681378).

Almost surely, 2^404044131 is an apocalyptic number.

404044131 is a deficient number, since it is larger than the sum of its proper divisors (134681381).

404044131 is a wasteful number, since it uses less digits than its factorization.

404044131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134681380.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 404044131 is about 20100.8490119199. The cubic root of 404044131 is about 739.2810957047.

Adding to 404044131 its reverse (131440404), we get a palindrome (535484535).

The spelling of 404044131 in words is "four hundred four million, forty-four thousand, one hundred thirty-one".