7908979 has 4 divisors (see below), whose sum is σ = 8517376. Its totient is φ = 7300584.

The previous prime is 7908977. The next prime is 7908991. The reversal of 7908979 is 9798097.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9798097 = 107 ⋅91571.

It is a cyclic number.

It is not a de Polignac number, because 7908979 - 2¹ = 7908977 is a prime.

It is a Duffinian number.

7908979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7908977) 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, 304179 + ... + 304204.

It is an arithmetic number, because the mean of its divisors is an integer number (2129344).

Almost surely, 2^7908979 is an apocalyptic number.

7908979 is a deficient number, since it is larger than the sum of its proper divisors (608397).

7908979 is a wasteful number, since it uses less digits than its factorization.

7908979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608396.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 7908979 is about 2812.2907033235. The cubic root of 7908979 is about 199.2385966699.

The spelling of 7908979 in words is "seven million, nine hundred eight thousand, nine hundred seventy-nine".