3996863 has 4 divisors (see below), whose sum is σ = 4304328. Its totient is φ = 3689400.

The previous prime is 3996857. The next prime is 3996869. The reversal of 3996863 is 3686993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3686993 = 1423 ⋅2591.

It is an interprime number because it is at equal distance from previous prime (3996857) and next prime (3996869).

It is not a de Polignac number, because 3996863 - 2¹⁴ = 3980479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153713 + ... + 153738.

It is an arithmetic number, because the mean of its divisors is an integer number (1076082).

Almost surely, 2^3996863 is an apocalyptic number.

3996863 is a deficient number, since it is larger than the sum of its proper divisors (307465).

3996863 is a wasteful number, since it uses less digits than its factorization.

3996863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307464.

The product of its digits is 209952, while the sum is 44.

The square root of 3996863 is about 1999.2155961777. The cubic root of 3996863 is about 158.6985970348.

The spelling of 3996863 in words is "three million, nine hundred ninety-six thousand, eight hundred sixty-three".