3987255 has 16 divisors (see below), whose sum is σ = 6413184. Its totient is φ = 2115360.

The previous prime is 3987229. The next prime is 3987259. The reversal of 3987255 is 5527893.

3987255 = 891² + 892² + ... + 895².

It is not a de Polignac number, because 3987255 - 2⁸ = 3986999 is a prime.

It is a d-powerful number, because it can be written as 3¹² + 9⁵ + 8⁴ + 7³ + 2²⁰ + 5⁸ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987259) 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, 2820 + ... + 3990.

It is an arithmetic number, because the mean of its divisors is an integer number (400824).

Almost surely, 2^3987255 is an apocalyptic number.

3987255 is a deficient number, since it is larger than the sum of its proper divisors (2425929).

3987255 is a wasteful number, since it uses less digits than its factorization.

3987255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its digits is 75600, while the sum is 39.

The square root of 3987255 is about 1996.8112079012. The cubic root of 3987255 is about 158.5713305969.

The spelling of 3987255 in words is "three million, nine hundred eighty-seven thousand, two hundred fifty-five".