2985991 has 2 divisors, whose sum is σ = 2985992. Its totient is φ = 2985990.

The previous prime is 2985979. The next prime is 2986003. The reversal of 2985991 is 1995892.

It is a balanced prime because it is at equal distance from previous prime (2985979) and next prime (2986003).

It is a cyclic number.

It is not a de Polignac number, because 2985991 - 2¹¹ = 2983943 is a prime.

It is a super-2 number, since 2×2985991² = 17832284504162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2985901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1492995 + 1492996.

It is an arithmetic number, because the mean of its divisors is an integer number (1492996).

2^2985991 is an apocalyptic number.

2985991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2985991 is an equidigital number, since it uses as much as digits as its factorization.

2985991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 43.

The square root of 2985991 is about 1728.0020254618. The cubic root of 2985991 is about 144.0001125256. Note that the first 3 decimals are identical.

Subtracting from 2985991 its reverse (1995892), we obtain a palindrome (990099).

The spelling of 2985991 in words is "two million, nine hundred eighty-five thousand, nine hundred ninety-one".