3978206219 has 8 divisors (see below), whose sum is σ = 4400012400. Its totient is φ = 3572941536.

The previous prime is 3978206213. The next prime is 3978206237. The reversal of 3978206219 is 9126028793.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3978206219 - 2⁴ = 3978206203 is a prime.

It is a super-2 number, since 2×3978206219² = 31652249441780551922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3978206213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4134869 + ... + 4135830.

It is an arithmetic number, because the mean of its divisors is an integer number (550001550).

Almost surely, 2^3978206219 is an apocalyptic number.

3978206219 is a deficient number, since it is larger than the sum of its proper divisors (421806181).

3978206219 is a wasteful number, since it uses less digits than its factorization.

3978206219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8270749.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 3978206219 is about 63073.0229099573. The cubic root of 3978206219 is about 1584.5128442789.

The spelling of 3978206219 in words is "three billion, nine hundred seventy-eight million, two hundred six thousand, two hundred nineteen".