404204431 has 8 divisors (see below), whose sum is σ = 410090240. Its totient is φ = 398328192.

The previous prime is 404204417. The next prime is 404204441. The reversal of 404204431 is 134402404.

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

It is a cyclic number.

It is not a de Polignac number, because 404204431 - 2⁵ = 404204399 is a prime.

It is a super-2 number, since 2×404204431² = 326762444080067522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404204401) 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, 162211 + ... + 164683.

It is an arithmetic number, because the mean of its divisors is an integer number (51261280).

Almost surely, 2^404204431 is an apocalyptic number.

404204431 is a deficient number, since it is larger than the sum of its proper divisors (5885809).

404204431 is a wasteful number, since it uses less digits than its factorization.

404204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404204431 is about 20104.8360102737. The cubic root of 404204431 is about 739.3788499531.

Adding to 404204431 its reverse (134402404), we get a palindrome (538606835).

The spelling of 404204431 in words is "four hundred four million, two hundred four thousand, four hundred thirty-one".