9861836 has 36 divisors (see below), whose sum is σ = 19341000. Its totient is φ = 4386816.

The previous prime is 9861833. The next prime is 9861847. The reversal of 9861836 is 6381689.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9861793 and 9861802.

It is not an unprimeable number, because it can be changed into a prime (9861833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21740 + ... + 22188.

It is an arithmetic number, because the mean of its divisors is an integer number (537250).

Almost surely, 2^9861836 is an apocalyptic number.

It is an amenable number.

9861836 is a deficient number, since it is larger than the sum of its proper divisors (9479164).

9861836 is a wasteful number, since it uses less digits than its factorization.

9861836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 487 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 9861836 is about 3140.3560307710. The cubic root of 9861836 is about 214.4466462607.

The spelling of 9861836 in words is "nine million, eight hundred sixty-one thousand, eight hundred thirty-six".