470440 has 32 divisors (see below), whose sum is σ = 1116000. Its totient is φ = 177984.

The previous prime is 470429. The next prime is 470443. The reversal of 470440 is 44074.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (470443) 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, 451 + ... + 1069.

It is an arithmetic number, because the mean of its divisors is an integer number (34875).

2⁴⁷⁰⁴⁴⁰ is an apocalyptic number.

470440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 470440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558000).

470440 is an abundant number, since it is smaller than the sum of its proper divisors (645560).

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

470440 is a wasteful number, since it uses less digits than its factorization.

470440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 645 counting only the distinct ones).

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

The square root of 470440 is about 685.8862879516. The cubic root of 470440 is about 77.7740557554.

The spelling of 470440 in words is "four hundred seventy thousand, four hundred forty", and thus it is an iban number.