3159991 has 2 divisors, whose sum is σ = 3159992. Its totient is φ = 3159990.

The previous prime is 3159973. The next prime is 3160007. The reversal of 3159991 is 1999513.

It is a strong prime.

It is an emirp because it is prime and its reverse (1999513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3159991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3159991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3159931) 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, 1579995 + 1579996.

It is an arithmetic number, because the mean of its divisors is an integer number (1579996).

Almost surely, 2^3159991 is an apocalyptic number.

3159991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3159991 is an equidigital number, since it uses as much as digits as its factorization.

3159991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10935, while the sum is 37.

The square root of 3159991 is about 1777.6363520135. The cubic root of 3159991 is about 146.7445391102.

The spelling of 3159991 in words is "three million, one hundred fifty-nine thousand, nine hundred ninety-one".