404641 has 4 divisors (see below), whose sum is σ = 407232. Its totient is φ = 402052.

The previous prime is 404597. The next prime is 404671. The reversal of 404641 is 146404.

404641 is nontrivially palindromic in base 8.

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 a cyclic number.

It is not a de Polignac number, because 404641 - 2⁷ = 404513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404671) 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, 1045 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (101808).

2⁴⁰⁴⁶⁴¹ is an apocalyptic number.

It is an amenable number.

404641 is a deficient number, since it is larger than the sum of its proper divisors (2591).

404641 is a wasteful number, since it uses less digits than its factorization.

404641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 404641 is about 636.1139834967. The cubic root of 404641 is about 73.9644947764.

The spelling of 404641 in words is "four hundred four thousand, six hundred forty-one".