9866942 has 16 divisors (see below), whose sum is σ = 15111360. Its totient is φ = 4831008.

The previous prime is 9866903. The next prime is 9866951. The reversal of 9866942 is 2496689.

It is a junction number, because it is equal to n+sod(n) for n = 9866893 and 9866902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30968 + ... + 31284.

It is an arithmetic number, because the mean of its divisors is an integer number (944460).

Almost surely, 2^9866942 is an apocalyptic number.

9866942 is a deficient number, since it is larger than the sum of its proper divisors (5244418).

9866942 is a wasteful number, since it uses less digits than its factorization.

9866942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595.

The product of its digits is 186624, while the sum is 44.

The square root of 9866942 is about 3141.1688907157. The cubic root of 9866942 is about 214.4836500416.

The spelling of 9866942 in words is "nine million, eight hundred sixty-six thousand, nine hundred forty-two".