387842977471 has 4 divisors (see below), whose sum is σ = 389582183872. Its totient is φ = 386103771072.

The previous prime is 387842977429. The next prime is 387842977523. The reversal of 387842977471 is 174779248783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174779248783 = 413807 ⋅422369.

It is a cyclic number.

It is not a de Polignac number, because 387842977471 - 2²³ = 387834588863 is a prime.

It is a super-3 number, since 3×387842977471³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387842977397 and 387842977406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387842977771) 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, 869602866 + ... + 869603311.

It is an arithmetic number, because the mean of its divisors is an integer number (97395545968).

Almost surely, 2^387842977471 is an apocalyptic number.

387842977471 is a deficient number, since it is larger than the sum of its proper divisors (1739206401).

387842977471 is a wasteful number, since it uses less digits than its factorization.

387842977471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739206400.

The product of its digits is 132765696, while the sum is 67.

The spelling of 387842977471 in words is "three hundred eighty-seven billion, eight hundred forty-two million, nine hundred seventy-seven thousand, four hundred seventy-one".