9923969379 has 4 divisors (see below), whose sum is σ = 13231959176. Its totient is φ = 6615979584.

The previous prime is 9923969371. The next prime is 9923969387. The reversal of 9923969379 is 9739693299.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9923969371) and next prime (9923969387).

It is not a de Polignac number, because 9923969379 - 2³ = 9923969371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9923969371) 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, 1653994894 + ... + 1653994899.

It is an arithmetic number, because the mean of its divisors is an integer number (3307989794).

Almost surely, 2^9923969379 is an apocalyptic number.

9923969379 is a deficient number, since it is larger than the sum of its proper divisors (3307989797).

9923969379 is a wasteful number, since it uses less digits than its factorization.

9923969379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307989796.

The product of its digits is 44641044, while the sum is 66.

The square root of 9923969379 is about 99619.1215530432. The cubic root of 9923969379 is about 2148.9606932107.

The spelling of 9923969379 in words is "nine billion, nine hundred twenty-three million, nine hundred sixty-nine thousand, three hundred seventy-nine".