3011989 has 2 divisors, whose sum is σ = 3011990. Its totient is φ = 3011988.

The previous prime is 3011971. The next prime is 3012001. The reversal of 3011989 is 9891103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3010225 + 1764 = 1735^2 + 42^2 .

It is a cyclic number.

It is not a de Polignac number, because 3011989 - 2¹⁹ = 2487701 is a prime.

It is a super-2 number, since 2×3011989² = 18144155472242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3011989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3011909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1505994 + 1505995.

It is an arithmetic number, because the mean of its divisors is an integer number (1505995).

Almost surely, 2^3011989 is an apocalyptic number.

It is an amenable number.

3011989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3011989 is an equidigital number, since it uses as much as digits as its factorization.

3011989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 3011989 is about 1735.5082828958. The cubic root of 3011989 is about 144.4168253351.

The spelling of 3011989 in words is "three million, eleven thousand, nine hundred eighty-nine".