3220389 has 12 divisors (see below), whose sum is σ = 4680000. Its totient is φ = 2133864.

The previous prime is 3220381. The next prime is 3220409. The reversal of 3220389 is 9830223.

It is not a de Polignac number, because 3220389 - 2³ = 3220381 is a prime.

It is a super-2 number, since 2×3220389² = 20741810622642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612 + ... + 2610.

It is an arithmetic number, because the mean of its divisors is an integer number (390000).

Almost surely, 2^3220389 is an apocalyptic number.

It is an amenable number.

3220389 is a deficient number, since it is larger than the sum of its proper divisors (1459611).

3220389 is a wasteful number, since it uses less digits than its factorization.

3220389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3220389 is about 1794.5442318316. The cubic root of 3220389 is about 147.6735714038.

The spelling of 3220389 in words is "three million, two hundred twenty thousand, three hundred eighty-nine".