387870392 has 32 divisors (see below), whose sum is σ = 895087200. Its totient is φ = 153442944.

The previous prime is 387870361. The next prime is 387870397. The reversal of 387870392 is 293078783.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387870397) 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 7 ways as a sum of consecutive naturals, for example, 265667 + ... + 267122.

It is an arithmetic number, because the mean of its divisors is an integer number (27971475).

Almost surely, 2^387870392 is an apocalyptic number.

It is an amenable number.

387870392 is an abundant number, since it is smaller than the sum of its proper divisors (507216808).

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

387870392 is a wasteful number, since it uses less digits than its factorization.

387870392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532815 (or 532811 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 387870392 is about 19694.4254041594. The cubic root of 387870392 is about 729.2820814591.

The spelling of 387870392 in words is "three hundred eighty-seven million, eight hundred seventy thousand, three hundred ninety-two".