404841 has 4 divisors (see below), whose sum is σ = 539792. Its totient is φ = 269892.

The previous prime is 404837. The next prime is 404843. The reversal of 404841 is 148404.

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 not a de Polignac number, because 404841 - 2² = 404837 is a prime.

It is a D-number.

It is a Duffinian number.

404841 is a lucky number.

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (404843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67471 + ... + 67476.

It is an arithmetic number, because the mean of its divisors is an integer number (134948).

2⁴⁰⁴⁸⁴¹ is an apocalyptic number.

It is an amenable number.

404841 is a deficient number, since it is larger than the sum of its proper divisors (134951).

404841 is a wasteful number, since it uses less digits than its factorization.

404841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134950.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 404841 is about 636.2711686066. The cubic root of 404841 is about 73.9766787967.

The spelling of 404841 in words is "four hundred four thousand, eight hundred forty-one".