9871002961 has 4 divisors (see below), whose sum is σ = 10451650212. Its totient is φ = 9290355712.

The previous prime is 9871002959. The next prime is 9871002971. The reversal of 9871002961 is 1692001789.

9871002961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3486193936 + 6384809025 = 59044^2 + 79905^2 .

It is a cyclic number.

It is not a de Polignac number, because 9871002961 - 2¹ = 9871002959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9871002941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290323600 + ... + 290323633.

It is an arithmetic number, because the mean of its divisors is an integer number (2612912553).

Almost surely, 2^9871002961 is an apocalyptic number.

It is an amenable number.

9871002961 is a deficient number, since it is larger than the sum of its proper divisors (580647251).

9871002961 is a wasteful number, since it uses less digits than its factorization.

9871002961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580647250.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 9871002961 is about 99352.9212504595. The cubic root of 9871002961 is about 2145.1307118922.

The spelling of 9871002961 in words is "nine billion, eight hundred seventy-one million, two thousand, nine hundred sixty-one".