9442290 has 128 divisors (see below), whose sum is σ = 27869184. Its totient is φ = 2016000.

The previous prime is 9442283. The next prime is 9442291. The reversal of 9442290 is 922449.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9442291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132955 + ... + 133025.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

Almost surely, 2^9442290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9442290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13934592).

9442290 is an abundant number, since it is smaller than the sum of its proper divisors (18426894).

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

9442290 is a wasteful number, since it uses less digits than its factorization.

9442290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 9442290 is about 3072.8309423071. The cubic root of 9442290 is about 211.3614493094.

The spelling of 9442290 in words is "nine million, four hundred forty-two thousand, two hundred ninety".