989696969 has 8 divisors (see below), whose sum is σ = 1037363712. Its totient is φ = 942416640.

The previous prime is 989696957. The next prime is 989696971. The reversal of 989696969 is 969696989.

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 989696969 - 2²⁰ = 988648393 is a prime.

It is a super-2 number, since 2×989696969² = 1959000180895573922, which contains 22 as substring.

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

It is a Duffinian number.

989696969 is a modest number, since divided by 696969 gives 989 as remainder.

It is not an unprimeable number, because it can be changed into a prime (989696069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91352 + ... + 101609.

It is an arithmetic number, because the mean of its divisors is an integer number (129670464).

Almost surely, 2^989696969 is an apocalyptic number.

It is an amenable number.

989696969 is a deficient number, since it is larger than the sum of its proper divisors (47666743).

989696969 is a wasteful number, since it uses less digits than its factorization.

989696969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193207.

The product of its digits is 102036672, while the sum is 71.

The square root of 989696969 is about 31459.4495978553. The cubic root of 989696969 is about 996.5537936378.

The spelling of 989696969 in words is "nine hundred eighty-nine million, six hundred ninety-six thousand, nine hundred sixty-nine".