4197979 has 4 divisors (see below), whose sum is σ = 4215640. Its totient is φ = 4180320.

The previous prime is 4197967. The next prime is 4198003. The reversal of 4197979 is 9797914.

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 4197979 - 2⁹ = 4197467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4107979) 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, 8469 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (1053910).

Almost surely, 2^4197979 is an apocalyptic number.

4197979 is a deficient number, since it is larger than the sum of its proper divisors (17661).

4197979 is a wasteful number, since it uses less digits than its factorization.

4197979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17660.

The product of its digits is 142884, while the sum is 46.

The square root of 4197979 is about 2048.8970203502. The cubic root of 4197979 is about 161.3169815672.

The spelling of 4197979 in words is "four million, one hundred ninety-seven thousand, nine hundred seventy-nine".