9971614809 has 64 divisors (see below), whose sum is σ = 17082938880. Its totient is φ = 5693829120.

The previous prime is 9971614781. The next prime is 9971614819. The reversal of 9971614809 is 9084161799.

9971614809 is a `hidden beast` number, since 99 + 71 + 6 + 1 + 480 + 9 = 666.

It is not a de Polignac number, because 9971614809 - 2⁵ = 9971614777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9971614819) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 411889 + ... + 435425.

It is an arithmetic number, because the mean of its divisors is an integer number (266920920).

Almost surely, 2^9971614809 is an apocalyptic number.

It is an amenable number.

9971614809 is a deficient number, since it is larger than the sum of its proper divisors (7111324071).

9971614809 is a wasteful number, since it uses less digits than its factorization.

9971614809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23647 (or 23641 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 9971614809 is about 99857.9731869218. The cubic root of 9971614809 is about 2152.3942902353.

The spelling of 9971614809 in words is "nine billion, nine hundred seventy-one million, six hundred fourteen thousand, eight hundred nine".