387309916 has 18 divisors (see below), whose sum is σ = 788452728. Its totient is φ = 165989880.

The previous prime is 387309913. The next prime is 387309931. The reversal of 387309916 is 619903783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387309911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 987840 + ... + 988231.

Almost surely, 2^387309916 is an apocalyptic number.

It is an amenable number.

387309916 is an abundant number, since it is smaller than the sum of its proper divisors (401142812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387309916 is a wasteful number, since it uses less digits than its factorization.

387309916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976089 (or 1976080 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 387309916 is about 19680.1909543581. The cubic root of 387309916 is about 728.9306391985.

The spelling of 387309916 in words is "three hundred eighty-seven million, three hundred nine thousand, nine hundred sixteen".