969775891984 has 15 divisors (see below), whose sum is σ = 1878948422733. Its totient is φ = 484885976448.

The previous prime is 969775891949. The next prime is 969775892009. The reversal of 969775891984 is 489198577969.

The square root of 969775891984 is 984772.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 636006250000 + 333769641984 = 797500^2 + 577728^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 969775891898 and 969775891907.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 3815992 + ... + 4062184.

Almost surely, 2^969775891984 is an apocalyptic number.

969775891984 is the 984772-nd square number.

It is an amenable number.

969775891984 is a deficient number, since it is larger than the sum of its proper divisors (909172530749).

969775891984 is an frugal number, since it uses more digits than its factorization.

969775891984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492394 (or 246195 counting only the distinct ones).

The product of its digits is 2469035520, while the sum is 82.

The spelling of 969775891984 in words is "nine hundred sixty-nine billion, seven hundred seventy-five million, eight hundred ninety-one thousand, nine hundred eighty-four".