8319979 has 4 divisors (see below), whose sum is σ = 8334040. Its totient is φ = 8305920.

The previous prime is 8319977. The next prime is 8320001. The reversal of 8319979 is 9799138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9799138 = 2 ⋅4899569.

It is a cyclic number.

It is not a de Polignac number, because 8319979 - 2¹ = 8319977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8319977) 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, 6102 + ... + 7339.

It is an arithmetic number, because the mean of its divisors is an integer number (2083510).

Almost surely, 2^8319979 is an apocalyptic number.

8319979 is a deficient number, since it is larger than the sum of its proper divisors (14061).

8319979 is a wasteful number, since it uses less digits than its factorization.

8319979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14060.

The product of its digits is 122472, while the sum is 46.

The square root of 8319979 is about 2884.4373801489. The cubic root of 8319979 is about 202.6317102803.

The spelling of 8319979 in words is "eight million, three hundred nineteen thousand, nine hundred seventy-nine".