9793993979 has 12 divisors (see below), whose sum is σ = 12303200112. Its totient is φ = 7631682960.

The previous prime is 9793993949. The next prime is 9793994009.

9793993979 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (9793993949) and next prime (9793994009).

It is a de Polignac number, because none of the positive numbers 2^k-9793993979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9793993919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5780732 + ... + 5782425.

It is an arithmetic number, because the mean of its divisors is an integer number (1025266676).

Almost surely, 2^9793993979 is an apocalyptic number.

9793993979 is a deficient number, since it is larger than the sum of its proper divisors (2509206133).

9793993979 is a wasteful number, since it uses less digits than its factorization.

9793993979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563186 (or 11563175 counting only the distinct ones).

The product of its digits is 234365481, while the sum is 74.

The square root of 9793993979 is about 98964.6097299434. The cubic root of 9793993979 is about 2139.5377039502.

The spelling of 9793993979 in words is "nine billion, seven hundred ninety-three million, nine hundred ninety-three thousand, nine hundred seventy-nine".