9775079161 has 3 divisors (see below), whose sum is σ = 9775178031. Its totient is φ = 9774980292.

The previous prime is 9775079117. The next prime is 9775079177. The reversal of 9775079161 is 1619705779.

The square root of 9775079161 is 98869.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 9422390761 + 352688400 = 97069^2 + 18780^2 .

It is not a de Polignac number, because 9775079161 - 2¹³ = 9775070969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9775079099 and 9775079108.

It is not an unprimeable number, because it can be changed into a prime (9775079861) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 49435 + ... + 148303.

It is an arithmetic number, because the mean of its divisors is an integer number (3258392677).

Almost surely, 2^9775079161 is an apocalyptic number.

9775079161 is the 98869-th square number.

9775079161 is the 49435-th centered octagonal number.

It is an amenable number.

9775079161 is a deficient number, since it is larger than the sum of its proper divisors (98870).

9775079161 is an frugal number, since it uses more digits than its factorization.

9775079161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197738 (or 98869 counting only the distinct ones).

The product of its (nonzero) digits is 833490, while the sum is 52.

The cubic root of 9775079161 is about 2138.1594767607.

The spelling of 9775079161 in words is "nine billion, seven hundred seventy-five million, seventy-nine thousand, one hundred sixty-one".