9902986 has 8 divisors (see below), whose sum is σ = 15200064. Its totient is φ = 4836300.

The previous prime is 9902983. The next prime is 9902989. The reversal of 9902986 is 6892099.

9902986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9902983) and next prime (9902989).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (9902983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57490 + ... + 57661.

It is an arithmetic number, because the mean of its divisors is an integer number (1900008).

Almost surely, 2^9902986 is an apocalyptic number.

9902986 is a deficient number, since it is larger than the sum of its proper divisors (5297078).

9902986 is a wasteful number, since it uses less digits than its factorization.

9902986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115196.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 9902986 is about 3146.9010152847. The cubic root of 9902986 is about 214.7445026992.

The spelling of 9902986 in words is "nine million, nine hundred two thousand, nine hundred eighty-six".