8450440 has 32 divisors (see below), whose sum is σ = 20016000. Its totient is φ = 3201984.

The previous prime is 8450423. The next prime is 8450441. The reversal of 8450440 is 440548.

It is not an unprimeable number, because it can be changed into a prime (8450441) 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, 4800 + ... + 6319.

It is an arithmetic number, because the mean of its divisors is an integer number (625500).

Almost surely, 2^8450440 is an apocalyptic number.

It is an amenable number.

8450440 is an abundant number, since it is smaller than the sum of its proper divisors (11565560).

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

8450440 is a wasteful number, since it uses less digits than its factorization.

8450440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11149 (or 11145 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8450440 is about 2906.9640520653. The cubic root of 8450440 is about 203.6853408690.

Adding to 8450440 its reverse (440548), we get a palindrome (8890988).

The spelling of 8450440 in words is "eight million, four hundred fifty thousand, four hundred forty".