3998606 has 4 divisors (see below), whose sum is σ = 5997912. Its totient is φ = 1999302.

The previous prime is 3998591. The next prime is 3998609. The reversal of 3998606 is 6068993.

3998606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×3998606³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999650 + ... + 999653.

It is an arithmetic number, because the mean of its divisors is an integer number (1499478).

Almost surely, 2^3998606 is an apocalyptic number.

3998606 is a deficient number, since it is larger than the sum of its proper divisors (1999306).

3998606 is a wasteful number, since it uses less digits than its factorization.

3998606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999305.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 3998606 is about 1999.6514696316. The cubic root of 3998606 is about 158.7216627454.

The spelling of 3998606 in words is "three million, nine hundred ninety-eight thousand, six hundred six".