9956891 has 8 divisors (see below), whose sum is σ = 11657184. Its totient is φ = 8326080.

The previous prime is 9956873. The next prime is 9956897. The reversal of 9956891 is 1986599.

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

It is not a de Polignac number, because 9956891 - 2¹⁴ = 9940507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9956897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17060 + ... + 17633.

It is an arithmetic number, because the mean of its divisors is an integer number (1457148).

Almost surely, 2^9956891 is an apocalyptic number.

9956891 is a deficient number, since it is larger than the sum of its proper divisors (1700293).

9956891 is a wasteful number, since it uses less digits than its factorization.

9956891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34741.

The product of its digits is 174960, while the sum is 47.

The square root of 9956891 is about 3155.4541669940. The cubic root of 9956891 is about 215.1334379877.

The spelling of 9956891 in words is "nine million, nine hundred fifty-six thousand, eight hundred ninety-one".