3995818 has 16 divisors (see below), whose sum is σ = 6209280. Its totient is φ = 1927296.

The previous prime is 3995791. The next prime is 3995837. The reversal of 3995818 is 8185993.

It is a super-2 number, since 2×3995818² = 31933122978248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 7 ways as a sum of consecutive naturals, for example, 8103 + ... + 8581.

It is an arithmetic number, because the mean of its divisors is an integer number (388080).

Almost surely, 2^3995818 is an apocalyptic number.

3995818 is a deficient number, since it is larger than the sum of its proper divisors (2213462).

3995818 is a wasteful number, since it uses less digits than its factorization.

3995818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its digits is 77760, while the sum is 43.

The square root of 3995818 is about 1998.9542265895. The cubic root of 3995818 is about 158.6847649796.

The spelling of 3995818 in words is "three million, nine hundred ninety-five thousand, eight hundred eighteen".