3841987 has 8 divisors (see below), whose sum is σ = 3986640. Its totient is φ = 3699840.

The previous prime is 3841973. The next prime is 3841991. The reversal of 3841987 is 7891483.

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

It is a de Polignac number, because none of the positive numbers 2^k-3841987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3841907) 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, 2839 + ... + 3967.

It is an arithmetic number, because the mean of its divisors is an integer number (498330).

Almost surely, 2^3841987 is an apocalyptic number.

3841987 is a deficient number, since it is larger than the sum of its proper divisors (144653).

3841987 is a wasteful number, since it uses less digits than its factorization.

3841987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253.

The product of its digits is 48384, while the sum is 40.

The square root of 3841987 is about 1960.0987220036. The cubic root of 3841987 is about 156.6217108574.

It can be divided in two parts, 38 and 41987, that added together give a square (42025 = 205²).

The spelling of 3841987 in words is "three million, eight hundred forty-one thousand, nine hundred eighty-seven".