9979669799 has 8 divisors (see below), whose sum is σ = 10890554880. Its totient is φ = 9069391800.

The previous prime is 9979669789. The next prime is 9979669829.

It is a happy number.

9979669799 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 9979669799 - 2³² = 5684702503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979669789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117047 + ... + 183464.

It is an arithmetic number, because the mean of its divisors is an integer number (1361319360).

Almost surely, 2^9979669799 is an apocalyptic number.

9979669799 is a deficient number, since it is larger than the sum of its proper divisors (910885081).

9979669799 is a wasteful number, since it uses less digits than its factorization.

9979669799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303541.

The product of its digits is 937461924, while the sum is 80.

The square root of 9979669799 is about 99898.2972777815. The cubic root of 9979669799 is about 2152.9736964981.

The spelling of 9979669799 in words is "nine billion, nine hundred seventy-nine million, six hundred sixty-nine thousand, seven hundred ninety-nine".