404144031 has 8 divisors (see below), whose sum is σ = 539082544. Its totient is φ = 269317440.

The previous prime is 404143991. The next prime is 404144033. The reversal of 404144031 is 130441404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404144031 - 2¹⁰ = 404143007 is a prime.

It is a super-2 number, since 2×404144031² = 326664795585857922, 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 = 404143989 and 404144007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404144033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19156 + ... + 34281.

It is an arithmetic number, because the mean of its divisors is an integer number (67385318).

Almost surely, 2^404144031 is an apocalyptic number.

404144031 is a deficient number, since it is larger than the sum of its proper divisors (134938513).

404144031 is a wasteful number, since it uses less digits than its factorization.

404144031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55961.

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

The square root of 404144031 is about 20103.3338279998. Note that the first 3 decimals coincide. The cubic root of 404144031 is about 739.3420198215.

Adding to 404144031 its reverse (130441404), we get a palindrome (534585435).

The spelling of 404144031 in words is "four hundred four million, one hundred forty-four thousand, thirty-one".