9979982 has 4 divisors (see below), whose sum is σ = 14969976. Its totient is φ = 4989990.

The previous prime is 9979967. The next prime is 9979993. The reversal of 9979982 is 2899799.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494994 + ... + 2494997.

It is an arithmetic number, because the mean of its divisors is an integer number (3742494).

Almost surely, 2^9979982 is an apocalyptic number.

9979982 is a deficient number, since it is larger than the sum of its proper divisors (4989994).

9979982 is a wasteful number, since it uses less digits than its factorization.

9979982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989993.

The product of its digits is 734832, while the sum is 53.

The square root of 9979982 is about 3159.1109508848. The cubic root of 9979982 is about 215.2996147259.

The spelling of 9979982 in words is "nine million, nine hundred seventy-nine thousand, nine hundred eighty-two".