8244390 has 128 divisors (see below), whose sum is σ = 25546752. Its totient is φ = 1653120.

The previous prime is 8244389. The next prime is 8244391. The reversal of 8244390 is 934428.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8244389) and next prime (8244391).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8244391) 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, 99289 + ... + 99371.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

Almost surely, 2^8244390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8244390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12773376).

8244390 is an abundant number, since it is smaller than the sum of its proper divisors (17302362).

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

8244390 is a wasteful number, since it uses less digits than its factorization.

8244390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 8244390 is about 2871.3045815448. The cubic root of 8244390 is about 202.0161899255.

The spelling of 8244390 in words is "eight million, two hundred forty-four thousand, three hundred ninety".