3222991 has 2 divisors, whose sum is σ = 3222992. Its totient is φ = 3222990.

The previous prime is 3222971. The next prime is 3223007. The reversal of 3222991 is 1992223.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3222991 - 2¹⁷ = 3091919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3222971) 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, 1611495 + 1611496.

It is an arithmetic number, because the mean of its divisors is an integer number (1611496).

Almost surely, 2^3222991 is an apocalyptic number.

3222991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3222991 is an equidigital number, since it uses as much as digits as its factorization.

3222991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 3222991 is about 1795.2690606146. The cubic root of 3222991 is about 147.7133329762.

The spelling of 3222991 in words is "three million, two hundred twenty-two thousand, nine hundred ninety-one".