404617 has 4 divisors (see below), whose sum is σ = 428436. Its totient is φ = 380800.

The previous prime is 404597. The next prime is 404671. The reversal of 404617 is 716404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 95481 = 556^2 + 309^2 .

It is not a de Polignac number, because 404617 - 2⁷ = 404489 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

404617 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 (404017) 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, 11884 + ... + 11917.

It is an arithmetic number, because the mean of its divisors is an integer number (107109).

2⁴⁰⁴⁶¹⁷ is an apocalyptic number.

It is an amenable number.

404617 is a deficient number, since it is larger than the sum of its proper divisors (23819).

404617 is a wasteful number, since it uses less digits than its factorization.

404617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23818.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 404617 is about 636.0951186733. The cubic root of 404617 is about 73.9630324242.

The spelling of 404617 in words is "four hundred four thousand, six hundred seventeen".