9442440 has 128 divisors (see below), whose sum is σ = 36000000. Its totient is φ = 2156544.

The previous prime is 9442439. The next prime is 9442457. The reversal of 9442440 is 442449.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6936 + ... + 8184.

It is an arithmetic number, because the mean of its divisors is an integer number (281250).

Almost surely, 2^9442440 is an apocalyptic number.

9442440 is a gapful number since it is divisible by the number (90) 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 9442440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18000000).

9442440 is an abundant number, since it is smaller than the sum of its proper divisors (26557560).

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

9442440 is a wasteful number, since it uses less digits than its factorization.

9442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 9442440 is about 3072.8553496707. The cubic root of 9442440 is about 211.3625685312.

Adding to 9442440 its reverse (442449), we get a palindrome (9884889).

The spelling of 9442440 in words is "nine million, four hundred forty-two thousand, four hundred forty".