9642440 has 16 divisors (see below), whose sum is σ = 21695580. Its totient is φ = 3856960.

The previous prime is 9642419. The next prime is 9642461. The reversal of 9642440 is 442469.

It is an interprime number because it is at equal distance from previous prime (9642419) and next prime (9642461).

It can be written as a sum of positive squares in 2 ways, for example, as 9012004 + 630436 = 3002^2 + 794^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120491 + ... + 120570.

Almost surely, 2^9642440 is an apocalyptic number.

It is an amenable number.

9642440 is an abundant number, since it is smaller than the sum of its proper divisors (12053140).

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

9642440 is a wasteful number, since it uses less digits than its factorization.

9642440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241072 (or 241068 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 9642440 is about 3105.2278499331. The cubic root of 9642440 is about 212.8444425427.

Adding to 9642440 its sum of digits (29), we get a palindrome (9642469).

The spelling of 9642440 in words is "nine million, six hundred forty-two thousand, four hundred forty".