3221447 has 4 divisors (see below), whose sum is σ = 3235056. Its totient is φ = 3207840.

The previous prime is 3221443. The next prime is 3221453. The reversal of 3221447 is 7441223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7441223 = 17 ⋅437719.

It is a cyclic number.

It is not a de Polignac number, because 3221447 - 2² = 3221443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221441) 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, 6443 + ... + 6924.

It is an arithmetic number, because the mean of its divisors is an integer number (808764).

Almost surely, 2^3221447 is an apocalyptic number.

3221447 is a deficient number, since it is larger than the sum of its proper divisors (13609).

3221447 is a wasteful number, since it uses less digits than its factorization.

3221447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13608.

The product of its digits is 1344, while the sum is 23.

The square root of 3221447 is about 1794.8389899933. The cubic root of 3221447 is about 147.6897414515.

The spelling of 3221447 in words is "three million, two hundred twenty-one thousand, four hundred forty-seven".