3840987 has 16 divisors (see below), whose sum is σ = 5277440. Its totient is φ = 2484000.

The previous prime is 3840971. The next prime is 3841009. The reversal of 3840987 is 7890483.

It is not a de Polignac number, because 3840987 - 2⁴ = 3840971 is a prime.

It is a super-2 number, since 2×3840987² = 29506362268338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3840787) 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, 25362 + ... + 25512.

It is an arithmetic number, because the mean of its divisors is an integer number (329840).

Almost surely, 2^3840987 is an apocalyptic number.

3840987 is a deficient number, since it is larger than the sum of its proper divisors (1436453).

3840987 is a wasteful number, since it uses less digits than its factorization.

3840987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3840987 is about 1959.8436162102. The cubic root of 3840987 is about 156.6081210751.

The spelling of 3840987 in words is "three million, eight hundred forty thousand, nine hundred eighty-seven".