404770 has 16 divisors (see below), whose sum is σ = 771768. Its totient is φ = 152320.

The previous prime is 404713. The next prime is 404773. The reversal of 404770 is 77404.

It is a happy number.

404770 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 239121 + 165649 = 489^2 + 407^2 .

It is an Ulam number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (404773) 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, 1021 + ... + 1360.

2⁴⁰⁴⁷⁷⁰ is an apocalyptic number.

404770 is a deficient number, since it is larger than the sum of its proper divisors (366998).

404770 is a wasteful number, since it uses less digits than its factorization.

404770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 404770 is about 636.2153723386. The cubic root of 404770 is about 73.9723539290.

The spelling of 404770 in words is "four hundred four thousand, seven hundred seventy", and thus it is an iban number.