9400240 has 20 divisors (see below), whose sum is σ = 21855744. Its totient is φ = 3760064.

The previous prime is 9400219. The next prime is 9400247. The reversal of 9400240 is 420049.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (9400247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58672 + ... + 58831.

Almost surely, 2^9400240 is an apocalyptic number.

It is an amenable number.

9400240 is an abundant number, since it is smaller than the sum of its proper divisors (12455504).

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

9400240 is a wasteful number, since it uses less digits than its factorization.

9400240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117516 (or 117510 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 9400240 is about 3065.9810827857. The cubic root of 9400240 is about 211.0472255650.

Adding to 9400240 its reverse (420049), we get a palindrome (9820289).

The spelling of 9400240 in words is "nine million, four hundred thousand, two hundred forty".