387947875 has 16 divisors (see below), whose sum is σ = 553325760. Its totient is φ = 266020800.

The previous prime is 387947869. The next prime is 387947887. The reversal of 387947875 is 578749783.

It is not a de Polignac number, because 387947875 - 2⁵ = 387947843 is a prime.

It is a super-3 number, since 3×387947875³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220810 + ... + 222559.

It is an arithmetic number, because the mean of its divisors is an integer number (34582860).

Almost surely, 2^387947875 is an apocalyptic number.

387947875 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

387947875 is a deficient number, since it is larger than the sum of its proper divisors (165377885).

387947875 is an equidigital number, since it uses as much as digits as its factorization.

387947875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443391 (or 443381 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 58.

The square root of 387947875 is about 19696.3924361798. The cubic root of 387947875 is about 729.3306399487.

The spelling of 387947875 in words is "three hundred eighty-seven million, nine hundred forty-seven thousand, eight hundred seventy-five".