2399166 has 64 divisors (see below), whose sum is σ = 6658560. Its totient is φ = 622080.

The previous prime is 2399143. The next prime is 2399167. The reversal of 2399166 is 6619932.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is a plaindrome in base 16.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 2399166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3870 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (104040).

2^2399166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2399166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3329280).

2399166 is an abundant number, since it is smaller than the sum of its proper divisors (4259394).

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

2399166 is a wasteful number, since it uses less digits than its factorization.

2399166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 600 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 2399166 is about 1548.9241427520. The cubic root of 2399166 is about 133.8710796897.

The spelling of 2399166 in words is "two million, three hundred ninety-nine thousand, one hundred sixty-six".