3911879 has 2 divisors, whose sum is σ = 3911880. Its totient is φ = 3911878.

The previous prime is 3911861. The next prime is 3911881. The reversal of 3911879 is 9781193.

It is a strong prime.

It is an emirp because it is prime and its reverse (9781193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3911879 - 2⁸ = 3911623 is a prime.

It is a Sophie Germain prime.

Together with 3911881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3911849) 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 as a sum of consecutive naturals, namely, 1955939 + 1955940.

It is an arithmetic number, because the mean of its divisors is an integer number (1955940).

Almost surely, 2^3911879 is an apocalyptic number.

3911879 is a deficient number, since it is larger than the sum of its proper divisors (1).

3911879 is an equidigital number, since it uses as much as digits as its factorization.

3911879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 3911879 is about 1977.8470618326. The cubic root of 3911879 is about 157.5657439482.

The spelling of 3911879 in words is "three million, nine hundred eleven thousand, eight hundred seventy-nine".