9929779299 has 48 divisors (see below), whose sum is σ = 16057143648. Its totient is φ = 5860800000.

The previous prime is 9929779283. The next prime is 9929779309.

9929779299 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9929779299 - 2⁴ = 9929779283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9929779219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2681149 + ... + 2684849.

It is an arithmetic number, because the mean of its divisors is an integer number (334523826).

Almost surely, 2^9929779299 is an apocalyptic number.

9929779299 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9929779299 is a deficient number, since it is larger than the sum of its proper divisors (6127364349).

9929779299 is a wasteful number, since it uses less digits than its factorization.

9929779299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420 (or 4417 counting only the distinct ones).

The product of its digits is 104162436, while the sum is 72.

The square root of 9929779299 is about 99648.2779530083. The cubic root of 9929779299 is about 2149.3799761794.

The spelling of 9929779299 in words is "nine billion, nine hundred twenty-nine million, seven hundred seventy-nine thousand, two hundred ninety-nine".