3985287 has 8 divisors (see below), whose sum is σ = 5337840. Its totient is φ = 2644800.

The previous prime is 3985277. The next prime is 3985297. The reversal of 3985287 is 7825893.

It is an interprime number because it is at equal distance from previous prime (3985277) and next prime (3985297).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3985287 - 2⁸ = 3985031 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2214 + ... + 3587.

It is an arithmetic number, because the mean of its divisors is an integer number (667230).

Almost surely, 2^3985287 is an apocalyptic number.

3985287 is a deficient number, since it is larger than the sum of its proper divisors (1352553).

3985287 is a wasteful number, since it uses less digits than its factorization.

3985287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033.

The product of its digits is 120960, while the sum is 42.

The square root of 3985287 is about 1996.3183613843. The cubic root of 3985287 is about 158.5452374798.

Subtracting 3985287 from its reverse (7825893), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 3985287 in words is "three million, nine hundred eighty-five thousand, two hundred eighty-seven".