3998326 has 4 divisors (see below), whose sum is σ = 5997492. Its totient is φ = 1999162.

The previous prime is 3998299. The next prime is 3998333. The reversal of 3998326 is 6238993.

3998326 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, and also an emirpimes, since its reverse is a distinct semiprime: 6238993 = 2237 ⋅2789.

It is a super-2 number, since 2×3998326² = 31973221604552, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 999580 + ... + 999583.

It is an arithmetic number, because the mean of its divisors is an integer number (1499373).

Almost surely, 2^3998326 is an apocalyptic number.

3998326 is a deficient number, since it is larger than the sum of its proper divisors (1999166).

3998326 is a wasteful number, since it uses less digits than its factorization.

3998326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999165.

The product of its digits is 69984, while the sum is 40.

The square root of 3998326 is about 1999.5814562053. The cubic root of 3998326 is about 158.7179578623.

The spelling of 3998326 in words is "three million, nine hundred ninety-eight thousand, three hundred twenty-six".