3987375 has 64 divisors (see below), whose sum is σ = 7987200. Its totient is φ = 1764000.

The previous prime is 3987353. The next prime is 3987407. The reversal of 3987375 is 5737893.

It is not a de Polignac number, because 3987375 - 2⁶ = 3987311 is a prime.

It is an Ulam number.

Its product of digits (158760) is a multiple of the sum of its prime factors (70).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128610 + ... + 128640.

It is an arithmetic number, because the mean of its divisors is an integer number (124800).

Almost surely, 2^3987375 is an apocalyptic number.

3987375 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3987375 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

3987375 is an equidigital number, since it uses as much as digits as its factorization.

3987375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 46 counting only the distinct ones).

The product of its digits is 158760, while the sum is 42.

The square root of 3987375 is about 1996.8412555834. The cubic root of 3987375 is about 158.5729213629.

The spelling of 3987375 in words is "three million, nine hundred eighty-seven thousand, three hundred seventy-five".