404705 has 16 divisors (see below), whose sum is σ = 574464. Its totient is φ = 267840.

The previous prime is 404699. The next prime is 404713. The reversal of 404705 is 507404.

It is not a de Polignac number, because 404705 - 2⁸ = 404449 is a prime.

It is a super-2 number, since 2×404705² = 327572274050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899 + ... + 1271.

It is an arithmetic number, because the mean of its divisors is an integer number (35904).

2⁴⁰⁴⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

404705 is a deficient number, since it is larger than the sum of its proper divisors (169759).

404705 is a wasteful number, since it uses less digits than its factorization.

404705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 404705 is about 636.1642869574. The cubic root of 404705 is about 73.9683940996.

The spelling of 404705 in words is "four hundred four thousand, seven hundred five".