969989969 has 16 divisors (see below), whose sum is σ = 1080092160. Its totient is φ = 865054080.

The previous prime is 969989963. The next prime is 969989981.

It is a happy number.

969989969 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969989969 is a prime.

It is a super-2 number, since 2×969989969² = 1881761079921241922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 969989896 and 969989905.

It is not an unprimeable number, because it can be changed into a prime (969989963) 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 15 ways as a sum of consecutive naturals, for example, 296189 + ... + 299445.

It is an arithmetic number, because the mean of its divisors is an integer number (67505760).

Almost surely, 2^969989969 is an apocalyptic number.

It is an amenable number.

969989969 is a deficient number, since it is larger than the sum of its proper divisors (110102191).

969989969 is a wasteful number, since it uses less digits than its factorization.

969989969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040.

The product of its digits is 153055008, while the sum is 74.

The square root of 969989969 is about 31144.6619663788. The cubic root of 969989969 is about 989.8948869797.

The spelling of 969989969 in words is "nine hundred sixty-nine million, nine hundred eighty-nine thousand, nine hundred sixty-nine".