3220291 has 4 divisors (see below), whose sum is σ = 3389800. Its totient is φ = 3050784.

The previous prime is 3220289. The next prime is 3220297. The reversal of 3220291 is 1920223.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3220291 - 2¹ = 3220289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 169489 = 3220291 / (3 + 2 + 2 + 0 + 2 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84726 + ... + 84763.

It is an arithmetic number, because the mean of its divisors is an integer number (847450).

Almost surely, 2^3220291 is an apocalyptic number.

3220291 is a deficient number, since it is larger than the sum of its proper divisors (169509).

3220291 is a wasteful number, since it uses less digits than its factorization.

3220291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169508.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3220291 is about 1794.5169266407. The cubic root of 3220291 is about 147.6720734318.

The spelling of 3220291 in words is "three million, two hundred twenty thousand, two hundred ninety-one".