8397979 has 4 divisors (see below), whose sum is σ = 8411920. Its totient is φ = 8384040.

The previous prime is 8397971. The next prime is 8398003. The reversal of 8397979 is 9797938.

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

It is a cyclic number.

It is not a de Polignac number, because 8397979 - 2³ = 8397971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8397971) 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, 6024 + ... + 7285.

It is an arithmetic number, because the mean of its divisors is an integer number (2102980).

Almost surely, 2^8397979 is an apocalyptic number.

8397979 is a deficient number, since it is larger than the sum of its proper divisors (13941).

8397979 is a wasteful number, since it uses less digits than its factorization.

8397979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13940.

The product of its digits is 857304, while the sum is 52.

The square root of 8397979 is about 2897.9266726403. The cubic root of 8397979 is about 203.2629673804.

The spelling of 8397979 in words is "eight million, three hundred ninety-seven thousand, nine hundred seventy-nine".