3984015 has 32 divisors (see below), whose sum is σ = 7672320. Its totient is φ = 1724544.

The previous prime is 3983999. The next prime is 3984031. The reversal of 3984015 is 5104893.

It is a Cunningham number, because it is equal to 1996²-1.

It is an interprime number because it is at equal distance from previous prime (3983999) and next prime (3984031).

It is not a de Polignac number, because 3984015 - 2⁴ = 3983999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 997 + ... + 2993.

It is an arithmetic number, because the mean of its divisors is an integer number (239760).

Almost surely, 2^3984015 is an apocalyptic number.

3984015 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3984015 is a deficient number, since it is larger than the sum of its proper divisors (3688305).

3984015 is a wasteful number, since it uses less digits than its factorization.

3984015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 3984015 is about 1995.9997494990. Note that the first 3 decimals coincide. The cubic root of 3984015 is about 158.5283678456.

The spelling of 3984015 in words is "three million, nine hundred eighty-four thousand, fifteen".