3223945 has 4 divisors (see below), whose sum is σ = 3868740. Its totient is φ = 2579152.

The previous prime is 3223943. The next prime is 3223963. The reversal of 3223945 is 5493223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1565001 + 1658944 = 1251^2 + 1288^2 .

It is a cyclic number.

It is not a de Polignac number, because 3223945 - 2¹ = 3223943 is a prime.

3223945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3223943) 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, 322390 + ... + 322399.

It is an arithmetic number, because the mean of its divisors is an integer number (967185).

Almost surely, 2^3223945 is an apocalyptic number.

It is an amenable number.

3223945 is a deficient number, since it is larger than the sum of its proper divisors (644795).

3223945 is an equidigital number, since it uses as much as digits as its factorization.

3223945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644794.

The product of its digits is 6480, while the sum is 28.

The square root of 3223945 is about 1795.5347392908. The cubic root of 3223945 is about 147.7279058391.

The spelling of 3223945 in words is "three million, two hundred twenty-three thousand, nine hundred forty-five".