387216916 has 12 divisors (see below), whose sum is σ = 677799360. Its totient is φ = 193559960.

The previous prime is 387216911. The next prime is 387216967. The reversal of 387216916 is 619612783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387216911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10551 + ... + 29761.

It is an arithmetic number, because the mean of its divisors is an integer number (56483280).

Almost surely, 2^387216916 is an apocalyptic number.

It is an amenable number.

387216916 is a deficient number, since it is larger than the sum of its proper divisors (290582444).

387216916 is a wasteful number, since it uses less digits than its factorization.

387216916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24254 (or 24252 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 387216916 is about 19677.8280305526. The cubic root of 387216916 is about 728.8722914574.

The spelling of 387216916 in words is "three hundred eighty-seven million, two hundred sixteen thousand, nine hundred sixteen".