9979910142 has 8 divisors (see below), whose sum is σ = 19959820296. Its totient is φ = 3326636712.

The previous prime is 9979910141. The next prime is 9979910153. The reversal of 9979910142 is 2410199799.

It is a sphenic number, since it is the product of 3 distinct primes.

9979910142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979910141) 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, 831659173 + ... + 831659184.

It is an arithmetic number, because the mean of its divisors is an integer number (2494977537).

Almost surely, 2^9979910142 is an apocalyptic number.

9979910142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9979910142 is a wasteful number, since it uses less digits than its factorization.

9979910142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663318362.

The product of its (nonzero) digits is 367416, while the sum is 51.

The square root of 9979910142 is about 99899.5002089600. The cubic root of 9979910142 is about 2152.9909799023.

The spelling of 9979910142 in words is "nine billion, nine hundred seventy-nine million, nine hundred ten thousand, one hundred forty-two".