4999966 has 4 divisors (see below), whose sum is σ = 7499952. Its totient is φ = 2499982.

The previous prime is 4999963. The next prime is 4999999. The reversal of 4999966 is 6699994.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249990 + ... + 1249993.

It is an arithmetic number, because the mean of its divisors is an integer number (1874988).

Almost surely, 2^4999966 is an apocalyptic number.

4999966 is a deficient number, since it is larger than the sum of its proper divisors (2499986).

4999966 is a wasteful number, since it uses less digits than its factorization.

4999966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499985.

The product of its digits is 944784, while the sum is 52.

The square root of 4999966 is about 2236.0603748557. The cubic root of 4999966 is about 170.9972070722.

The spelling of 4999966 in words is "four million, nine hundred ninety-nine thousand, nine hundred sixty-six".