404740 has 48 divisors (see below), whose sum is σ = 1008000. Its totient is φ = 136416.

The previous prime is 404713. The next prime is 404773. The reversal of 404740 is 47404.

It is a happy number.

404740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is a zygodrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6831 + ... + 6889.

It is an arithmetic number, because the mean of its divisors is an integer number (21000).

2⁴⁰⁴⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504000).

404740 is an abundant number, since it is smaller than the sum of its proper divisors (603260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404740 is a wasteful number, since it uses less digits than its factorization.

404740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 404740 is about 636.1917949801. The cubic root of 404740 is about 73.9705263681.

The spelling of 404740 in words is "four hundred four thousand, seven hundred forty", and thus it is an iban number.