3221279 has 8 divisors (see below), whose sum is σ = 3590640. Its totient is φ = 2871936.

The previous prime is 3221269. The next prime is 3221297. The reversal of 3221279 is 9721223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221279 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 (3221269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4664 + ... + 5309.

It is an arithmetic number, because the mean of its divisors is an integer number (448830).

Almost surely, 2^3221279 is an apocalyptic number.

3221279 is a deficient number, since it is larger than the sum of its proper divisors (369361).

3221279 is a wasteful number, since it uses less digits than its factorization.

3221279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009.

The product of its digits is 1512, while the sum is 26.

The square root of 3221279 is about 1794.7921885277. The cubic root of 3221279 is about 147.6871740434.

The spelling of 3221279 in words is "three million, two hundred twenty-one thousand, two hundred seventy-nine".