3894121930387 has 4 divisors (see below), whose sum is σ = 4193669771200. Its totient is φ = 3594574089576.

The previous prime is 3894121930331. The next prime is 3894121930417. The reversal of 3894121930387 is 7830391214983.

3894121930387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3894121930387 - 2²³ = 3894113541779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3894121910387) 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, 149773920387 + ... + 149773920412.

It is an arithmetic number, because the mean of its divisors is an integer number (1048417442800).

Almost surely, 2^{3894121930387} is an apocalyptic number.

3894121930387 is a deficient number, since it is larger than the sum of its proper divisors (299547840813).

3894121930387 is a wasteful number, since it uses less digits than its factorization.

3894121930387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299547840812.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 3894121930387 in words is "three trillion, eight hundred ninety-four billion, one hundred twenty-one million, nine hundred thirty thousand, three hundred eighty-seven".