3219945409 has 8 divisors (see below), whose sum is σ = 3430254240. Its totient is φ = 3013720416.

The previous prime is 3219945403. The next prime is 3219945433. The reversal of 3219945409 is 9045499123.

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

It is a de Polignac number, because none of the positive numbers 2^k-3219945409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3219945403) 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, 1019332 + ... + 1022485.

It is an arithmetic number, because the mean of its divisors is an integer number (428781780).

Almost surely, 2^3219945409 is an apocalyptic number.

It is an amenable number.

3219945409 is a deficient number, since it is larger than the sum of its proper divisors (210308831).

3219945409 is a wasteful number, since it uses less digits than its factorization.

3219945409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041919.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 3219945409 is about 56744.5628144230. The cubic root of 3219945409 is about 1476.6679068305.

The spelling of 3219945409 in words is "three billion, two hundred nineteen million, nine hundred forty-five thousand, four hundred nine".