969172989 has 8 divisors (see below), whose sum is σ = 1307800032. Its totient is φ = 638330640.

The previous prime is 969172973. The next prime is 969172991. The reversal of 969172989 is 989271969.

It is a happy number.

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

It is not a de Polignac number, because 969172989 - 2⁴ = 969172973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (969172909) 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, 1945882 + ... + 1946379.

It is an arithmetic number, because the mean of its divisors is an integer number (163475004).

Almost surely, 2^969172989 is an apocalyptic number.

It is an amenable number.

969172989 is a deficient number, since it is larger than the sum of its proper divisors (338627043).

969172989 is a wasteful number, since it uses less digits than its factorization.

969172989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892347.

The product of its digits is 4408992, while the sum is 60.

The square root of 969172989 is about 31131.5433122099. The cubic root of 969172989 is about 989.6168939049.

The spelling of 969172989 in words is "nine hundred sixty-nine million, one hundred seventy-two thousand, nine hundred eighty-nine".