3821946393 has 16 divisors (see below), whose sum is σ = 5116764416. Its totient is φ = 2537568000.

The previous prime is 3821946377. The next prime is 3821946397. The reversal of 3821946393 is 3936491283.

It is a happy number.

3821946393 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3821946393 - 2⁴ = 3821946377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3821946397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892305 + ... + 896577.

It is an arithmetic number, because the mean of its divisors is an integer number (319797776).

Almost surely, 2^3821946393 is an apocalyptic number.

It is an amenable number.

3821946393 is a deficient number, since it is larger than the sum of its proper divisors (1294818023).

3821946393 is a wasteful number, since it uses less digits than its factorization.

3821946393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424.

The product of its digits is 839808, while the sum is 48.

The square root of 3821946393 is about 61821.8925058106. The cubic root of 3821946393 is about 1563.4891212412.

The spelling of 3821946393 in words is "three billion, eight hundred twenty-one million, nine hundred forty-six thousand, three hundred ninety-three".