3219945 has 8 divisors (see below), whose sum is σ = 5151936. Its totient is φ = 1717296.

The previous prime is 3219929. The next prime is 3219947. The reversal of 3219945 is 5499123.

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

It is not a de Polignac number, because 3219945 - 2⁴ = 3219929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3219947) 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, 107317 + ... + 107346.

It is an arithmetic number, because the mean of its divisors is an integer number (643992).

Almost surely, 2^3219945 is an apocalyptic number.

It is an amenable number.

3219945 is a deficient number, since it is larger than the sum of its proper divisors (1931991).

3219945 is a wasteful number, since it uses less digits than its factorization.

3219945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214671.

The product of its digits is 9720, while the sum is 33.

The square root of 3219945 is about 1794.4205192763. The cubic root of 3219945 is about 147.6667844308. Note that the first 3 decimals are identical.

The spelling of 3219945 in words is "three million, two hundred nineteen thousand, nine hundred forty-five".