4135979 has 4 divisors (see below), whose sum is σ = 4145376. Its totient is φ = 4126584.

The previous prime is 4135933. The next prime is 4135987. The reversal of 4135979 is 9795314.

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-4135979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4135909) 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, 4004 + ... + 4929.

It is an arithmetic number, because the mean of its divisors is an integer number (1036344).

Almost surely, 2^4135979 is an apocalyptic number.

4135979 is a deficient number, since it is larger than the sum of its proper divisors (9397).

4135979 is an equidigital number, since it uses as much as digits as its factorization.

4135979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396.

The product of its digits is 34020, while the sum is 38.

The square root of 4135979 is about 2033.7106480520. The cubic root of 4135979 is about 160.5188753790.

The spelling of 4135979 in words is "four million, one hundred thirty-five thousand, nine hundred seventy-nine".