9992899971 has 24 divisors (see below), whose sum is σ = 14760293184. Its totient is φ = 6511789440.

The previous prime is 9992899967. The next prime is 9992900017. The reversal of 9992899971 is 1799982999.

9992899971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9992899971 - 2² = 9992899967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9992899971.

It is not an unprimeable number, because it can be changed into a prime (9992899471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322311 + ... + 351951.

It is an arithmetic number, because the mean of its divisors is an integer number (615012216).

Almost surely, 2^9992899971 is an apocalyptic number.

9992899971 is a deficient number, since it is larger than the sum of its proper divisors (4767393213).

9992899971 is a wasteful number, since it uses less digits than its factorization.

9992899971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30491 (or 30488 counting only the distinct ones).

The product of its digits is 59521392, while the sum is 72.

The square root of 9992899971 is about 99964.4935514606. The cubic root of 9992899971 is about 2153.9246843517.

The spelling of 9992899971 in words is "nine billion, nine hundred ninety-two million, eight hundred ninety-nine thousand, nine hundred seventy-one".