404747 has 8 divisors (see below), whose sum is σ = 470016. Its totient is φ = 341352.

The previous prime is 404713. The next prime is 404773. The reversal of 404747 is 747404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404747 - 2¹² = 400651 is a prime.

It is a super-3 number, since 3×404747³ = 198917123339222169, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38 + ... + 900.

It is an arithmetic number, because the mean of its divisors is an integer number (58752).

2⁴⁰⁴⁷⁴⁷ is an apocalyptic number.

404747 is a deficient number, since it is larger than the sum of its proper divisors (65269).

404747 is an equidigital number, since it uses as much as digits as its factorization.

404747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 404747 is about 636.1972964419. The cubic root of 404747 is about 73.9709528071.

The spelling of 404747 in words is "four hundred four thousand, seven hundred forty-seven", and thus it is an iban number.