3994015 has 8 divisors (see below), whose sum is σ = 4909968. Its totient is φ = 3117120.

The previous prime is 3994007. The next prime is 3994021. The reversal of 3994015 is 5104993.

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

It is not a de Polignac number, because 3994015 - 2³ = 3994007 is a prime.

It is a Duffinian number.

3994015 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9537 + ... + 9946.

It is an arithmetic number, because the mean of its divisors is an integer number (613746).

Almost surely, 2^3994015 is an apocalyptic number.

3994015 is a deficient number, since it is larger than the sum of its proper divisors (915953).

3994015 is a wasteful number, since it uses less digits than its factorization.

3994015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19529.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 3994015 is about 1998.5031898899. The cubic root of 3994015 is about 158.6608940496.

The spelling of 3994015 in words is "three million, nine hundred ninety-four thousand, fifteen".