989898969 has 8 divisors (see below), whose sum is σ = 1338455232. Its totient is φ = 650637680.

The previous prime is 989898941. The next prime is 989898983. The reversal of 989898969 is 969898989.

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

It is a cyclic number.

It is not a de Polignac number, because 989898969 - 2⁸ = 989898713 is a prime.

It is a super-2 number, since 2×989898969² = 1959799937654525922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 989898969.

It is not an unprimeable number, because it can be changed into a prime (989898929) 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 7 ways as a sum of consecutive naturals, for example, 2323494 + ... + 2323919.

It is an arithmetic number, because the mean of its divisors is an integer number (167306904).

Almost surely, 2^989898969 is an apocalyptic number.

It is an amenable number.

989898969 is a deficient number, since it is larger than the sum of its proper divisors (348556263).

989898969 is a wasteful number, since it uses less digits than its factorization.

989898969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647487.

The product of its digits is 181398528, while the sum is 75.

The square root of 989898969 is about 31462.6599161609. The cubic root of 989898969 is about 996.6215888582.

The spelling of 989898969 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixty-nine".