387686884 has 48 divisors (see below), whose sum is σ = 746461296. Its totient is φ = 175104000.

The previous prime is 387686881. The next prime is 387686917. The reversal of 387686884 is 488686783.

It can be written as a sum of positive squares in 8 ways, for example, as 32741284 + 354945600 = 5722^2 + 18840^2 .

It is a super-3 number, since 3×387686884³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (387686881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509064 + ... + 509824.

It is an arithmetic number, because the mean of its divisors is an integer number (15551277).

Almost surely, 2^387686884 is an apocalyptic number.

It is an amenable number.

387686884 is a deficient number, since it is larger than the sum of its proper divisors (358774412).

387686884 is a wasteful number, since it uses less digits than its factorization.

387686884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976 (or 974 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 58.

The square root of 387686884 is about 19689.7659711841. The cubic root of 387686884 is about 729.1670514472.

The spelling of 387686884 in words is "three hundred eighty-seven million, six hundred eighty-six thousand, eight hundred eighty-four".