4011979 has 2 divisors, whose sum is σ = 4011980. Its totient is φ = 4011978.

The previous prime is 4011977. The next prime is 4011991. The reversal of 4011979 is 9791104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4011979 - 2¹ = 4011977 is a prime.

Together with 4011977, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4011979.

It is not a weakly prime, because it can be changed into another prime (4011977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2005989 + 2005990.

It is an arithmetic number, because the mean of its divisors is an integer number (2005990).

Almost surely, 2^4011979 is an apocalyptic number.

4011979 is a deficient number, since it is larger than the sum of its proper divisors (1).

4011979 is an equidigital number, since it uses as much as digits as its factorization.

4011979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 4011979 is about 2002.9925112192. The cubic root of 4011979 is about 158.8984095845.

The spelling of 4011979 in words is "four million, eleven thousand, nine hundred seventy-nine".