3388221 has 6 divisors (see below), whose sum is σ = 4894110. Its totient is φ = 2258808.

The previous prime is 3388211. The next prime is 3388223. The reversal of 3388221 is 1228833.

It can be written as a sum of positive squares in only one way, i.e., 2604996 + 783225 = 1614^2 + 885^2 .

It is not a de Polignac number, because 3388221 - 2⁷ = 3388093 is a prime.

It is a super-2 number, since 2×3388221² = 22960083089682, 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 (3388223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188226 + ... + 188243.

It is an arithmetic number, because the mean of its divisors is an integer number (815685).

Almost surely, 2^3388221 is an apocalyptic number.

It is an amenable number.

3388221 is a deficient number, since it is larger than the sum of its proper divisors (1505889).

3388221 is a wasteful number, since it uses less digits than its factorization.

3388221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376475 (or 376472 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 3388221 is about 1840.7120904693. The cubic root of 3388221 is about 150.1956114635.

The spelling of 3388221 in words is "three million, three hundred eighty-eight thousand, two hundred twenty-one".