9930739211 has 4 divisors (see below), whose sum is σ = 9931245432. Its totient is φ = 9930232992.

The previous prime is 9930739157. The next prime is 9930739243. The reversal of 9930739211 is 1129370399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1129370399 = 167 ⋅6762697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9930739211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9930739271) 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, 222446 + ... + 263331.

It is an arithmetic number, because the mean of its divisors is an integer number (2482811358).

Almost surely, 2^9930739211 is an apocalyptic number.

9930739211 is a deficient number, since it is larger than the sum of its proper divisors (506221).

9930739211 is a wasteful number, since it uses less digits than its factorization.

9930739211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506220.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 9930739211 is about 99653.0943373060. The cubic root of 9930739211 is about 2149.4492341521.

The spelling of 9930739211 in words is "nine billion, nine hundred thirty million, seven hundred thirty-nine thousand, two hundred eleven".