6172979 has 4 divisors (see below), whose sum is σ = 6177984. Its totient is φ = 6167976.

The previous prime is 6172949. The next prime is 6172987. The reversal of 6172979 is 9792716.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6172979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6172909) 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, 809 + ... + 3605.

It is an arithmetic number, because the mean of its divisors is an integer number (1544496).

Almost surely, 2^6172979 is an apocalyptic number.

6172979 is a deficient number, since it is larger than the sum of its proper divisors (5005).

6172979 is a wasteful number, since it uses less digits than its factorization.

6172979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004.

The product of its digits is 47628, while the sum is 41.

The square root of 6172979 is about 2484.5480474324. The cubic root of 6172979 is about 183.4417845014.

The spelling of 6172979 in words is "six million, one hundred seventy-two thousand, nine hundred seventy-nine".