387816916 has 12 divisors (see below), whose sum is σ = 680637888. Its totient is φ = 193348952.

The previous prime is 387816911. The next prime is 387816917. The reversal of 387816916 is 619618783.

It is a self number, because there is not a number n which added to its sum of digits gives 387816916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387816911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138316 + ... + 141091.

It is an arithmetic number, because the mean of its divisors is an integer number (56719824).

Almost surely, 2^387816916 is an apocalyptic number.

It is an amenable number.

387816916 is a deficient number, since it is larger than the sum of its proper divisors (292820972).

387816916 is a wasteful number, since it uses less digits than its factorization.

387816916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279758 (or 279756 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 387816916 is about 19693.0677142999. The cubic root of 387816916 is about 729.2485643515.

The spelling of 387816916 in words is "three hundred eighty-seven million, eight hundred sixteen thousand, nine hundred sixteen".