2399966 has 16 divisors (see below), whose sum is σ = 3825360. Its totient is φ = 1126080.

The previous prime is 2399951. The next prime is 2399977. The reversal of 2399966 is 6699932.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4976 + ... + 5436.

It is an arithmetic number, because the mean of its divisors is an integer number (239085).

2^2399966 is an apocalyptic number.

2399966 is a deficient number, since it is larger than the sum of its proper divisors (1425394).

2399966 is a wasteful number, since it uses less digits than its factorization.

2399966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its digits is 157464, while the sum is 44.

The square root of 2399966 is about 1549.1823649913. The cubic root of 2399966 is about 133.8859577712.

The spelling of 2399966 in words is "two million, three hundred ninety-nine thousand, nine hundred sixty-six".