9942986 has 4 divisors (see below), whose sum is σ = 14914482. Its totient is φ = 4971492.

The previous prime is 9942941. The next prime is 9943057. The reversal of 9942986 is 6892499.

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

It can be written as a sum of positive squares in only one way, i.e., 9333025 + 609961 = 3055^2 + 781^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9942986.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2485745 + ... + 2485748.

Almost surely, 2^9942986 is an apocalyptic number.

9942986 is a deficient number, since it is larger than the sum of its proper divisors (4971496).

9942986 is a wasteful number, since it uses less digits than its factorization.

9942986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971495.

The product of its digits is 279936, while the sum is 47.

The square root of 9942986 is about 3153.2500693729. The cubic root of 9942986 is about 215.0332452647.

The spelling of 9942986 in words is "nine million, nine hundred forty-two thousand, nine hundred eighty-six".