9956989 has 8 divisors (see below), whose sum is σ = 11406528. Its totient is φ = 8514240.

The previous prime is 9956977. The next prime is 9956993. The reversal of 9956989 is 9896599.

9956989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9956989 - 2⁹ = 9956477 is a prime.

It is a super-2 number, since 2×9956989² = 198283259892242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9956909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989 + ... + 4885.

It is an arithmetic number, because the mean of its divisors is an integer number (1425816).

Almost surely, 2^9956989 is an apocalyptic number.

It is an amenable number.

9956989 is a deficient number, since it is larger than the sum of its proper divisors (1449539).

9956989 is a wasteful number, since it uses less digits than its factorization.

9956989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395.

The product of its digits is 1574640, while the sum is 55.

The square root of 9956989 is about 3155.4696956238. The cubic root of 9956989 is about 215.1341437973.

The spelling of 9956989 in words is "nine million, nine hundred fifty-six thousand, nine hundred eighty-nine".