4129979 has 4 divisors (see below), whose sum is σ = 4719984. Its totient is φ = 3539976.

The previous prime is 4129943. The next prime is 4129981. The reversal of 4129979 is 9799214.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4129979 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4126979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294992 + ... + 295005.

It is an arithmetic number, because the mean of its divisors is an integer number (1179996).

Almost surely, 2^4129979 is an apocalyptic number.

4129979 is a deficient number, since it is larger than the sum of its proper divisors (590005).

4129979 is an equidigital number, since it uses as much as digits as its factorization.

4129979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590004.

The product of its digits is 40824, while the sum is 41.

The square root of 4129979 is about 2032.2349765714. The cubic root of 4129979 is about 160.4412170743.

The spelling of 4129979 in words is "four million, one hundred twenty-nine thousand, nine hundred seventy-nine".