404745 has 24 divisors (see below), whose sum is σ = 715008. Its totient is φ = 195360.

The previous prime is 404713. The next prime is 404773. The reversal of 404745 is 547404.

It is not a de Polignac number, because 404745 - 2⁵ = 404713 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1704 + ... + 1926.

It is an arithmetic number, because the mean of its divisors is an integer number (29792).

2⁴⁰⁴⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

404745 is a deficient number, since it is larger than the sum of its proper divisors (310263).

404745 is a wasteful number, since it uses less digits than its factorization.

404745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 404745 is about 636.1957246005. The cubic root of 404745 is about 73.9708309679.

The spelling of 404745 in words is "four hundred four thousand, seven hundred forty-five".