9959610845 has 4 divisors (see below), whose sum is σ = 11951533020. Its totient is φ = 7967688672.

The previous prime is 9959610833. The next prime is 9959610847. The reversal of 9959610845 is 5480169599.

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 2267092996 + 7692517849 = 47614^2 + 87707^2 .

It is a cyclic number.

It is not a de Polignac number, because 9959610845 - 2⁶ = 9959610781 is a prime.

It is a super-2 number, since 2×9959610845² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9959610847) 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, 995961080 + ... + 995961089.

It is an arithmetic number, because the mean of its divisors is an integer number (2987883255).

Almost surely, 2^9959610845 is an apocalyptic number.

It is an amenable number.

9959610845 is a deficient number, since it is larger than the sum of its proper divisors (1991922175).

9959610845 is a wasteful number, since it uses less digits than its factorization.

9959610845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991922174.

The product of its (nonzero) digits is 3499200, while the sum is 56.

The square root of 9959610845 is about 99797.8499016888. The cubic root of 9959610845 is about 2151.5302496977.

The spelling of 9959610845 in words is "nine billion, nine hundred fifty-nine million, six hundred ten thousand, eight hundred forty-five".