387842974843 has 4 divisors (see below), whose sum is σ = 387900194040. Its totient is φ = 387785755648.

The previous prime is 387842974823. The next prime is 387842974847. The reversal of 387842974843 is 348479248783.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387842974843 is a prime.

It is a super-3 number, since 3×387842974843³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387842974847) 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, 28599430 + ... + 28612987.

It is an arithmetic number, because the mean of its divisors is an integer number (96975048510).

Almost surely, 2^387842974843 is an apocalyptic number.

387842974843 is a deficient number, since it is larger than the sum of its proper divisors (57219197).

387842974843 is an equidigital number, since it uses as much as digits as its factorization.

387842974843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57219196.

The product of its digits is 260112384, while the sum is 67.

The spelling of 387842974843 in words is "three hundred eighty-seven billion, eight hundred forty-two million, nine hundred seventy-four thousand, eight hundred forty-three".