404831 has 8 divisors (see below), whose sum is σ = 466944. Its totient is φ = 343800.

The previous prime is 404827. The next prime is 404837. The reversal of 404831 is 138404.

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 404831 - 2² = 404827 is a prime.

It is a super-2 number, since 2×404831² = 327776277122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404837) 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, 866 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (58368).

2⁴⁰⁴⁸³¹ is an apocalyptic number.

404831 is a deficient number, since it is larger than the sum of its proper divisors (62113).

404831 is a wasteful number, since it uses less digits than its factorization.

404831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 404831 is about 636.2633102733. The cubic root of 404831 is about 73.9760696910.

The spelling of 404831 in words is "four hundred four thousand, eight hundred thirty-one".