387929977268 has 12 divisors (see below), whose sum is σ = 680537310180. Its totient is φ = 193490745792.

The previous prime is 387929977207. The next prime is 387929977307. The reversal of 387929977268 is 862779929783.

It can be written as a sum of positive squares in 2 ways, for example, as 369788042404 + 18141934864 = 608102^2 + 134692^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118558871 + ... + 118562142.

It is an arithmetic number, because the mean of its divisors is an integer number (56711442515).

Almost surely, 2^387929977268 is an apocalyptic number.

It is an amenable number.

387929977268 is a deficient number, since it is larger than the sum of its proper divisors (292607332912).

387929977268 is a wasteful number, since it uses less digits than its factorization.

387929977268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237121426 (or 237121424 counting only the distinct ones).

The product of its digits is 1152216576, while the sum is 77.

The spelling of 387929977268 in words is "three hundred eighty-seven billion, nine hundred twenty-nine million, nine hundred seventy-seven thousand, two hundred sixty-eight".