447040 has 56 divisors (see below), whose sum is σ = 1170432. Its totient is φ = 161280.

The previous prime is 447019. The next prime is 447053. The reversal of 447040 is 40744.

447040 = 100² + 101² + ... + 132².

It is a happy number.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 446999 and 447017.

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 7 ways as a sum of consecutive naturals, for example, 3457 + ... + 3583.

2⁴⁴⁷⁰⁴⁰ is an apocalyptic number.

447040 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 447040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585216).

447040 is an abundant number, since it is smaller than the sum of its proper divisors (723392).

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

447040 is a wasteful number, since it uses less digits than its factorization.

447040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 145 counting only the distinct ones).

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

The square root of 447040 is about 668.6104994689. The cubic root of 447040 is about 76.4625530483.

Adding to 447040 its reverse (40744), we get a palindrome (487784).

The spelling of 447040 in words is "four hundred forty-seven thousand, forty", and thus it is an iban number.