3249221 has 2 divisors, whose sum is σ = 3249222. Its totient is φ = 3249220.

The previous prime is 3249217. The next prime is 3249241. The reversal of 3249221 is 1229423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 98596 = 1775^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 3249221 - 2² = 3249217 is a prime.

It is a Chen prime.

It is equal to p₂₃₃₅₂₈ and since 3249221 and 233528 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3249241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1624610 + 1624611.

It is an arithmetic number, because the mean of its divisors is an integer number (1624611).

Almost surely, 2^3249221 is an apocalyptic number.

It is an amenable number.

3249221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3249221 is an equidigital number, since it uses as much as digits as its factorization.

3249221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 3249221 is about 1802.5595690573. The cubic root of 3249221 is about 148.1129676827.

The spelling of 3249221 in words is "three million, two hundred forty-nine thousand, two hundred twenty-one".