8199963 has 24 divisors (see below), whose sum is σ = 12646400. Its totient is φ = 5104944.

The previous prime is 8199943. The next prime is 8199979. The reversal of 8199963 is 3699918.

Added to its reverse (3699918) it gives a triangular number (11899881 = T₄₈₇₈).

It is not a de Polignac number, because 8199963 - 2⁵ = 8199931 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8199913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13206 + ... + 13812.

Almost surely, 2^8199963 is an apocalyptic number.

8199963 is a deficient number, since it is larger than the sum of its proper divisors (4446437).

8199963 is a wasteful number, since it uses less digits than its factorization.

8199963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 708 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 8199963 is about 2863.5577521677. The cubic root of 8199963 is about 201.6526642222.

Subtracting from 8199963 its sum of digits (45), we obtain a palindrome (8199918).

Adding to 8199963 its reverse (3699918), we get a triangular number (11899881 = T₄₈₇₈).

The spelling of 8199963 in words is "eight million, one hundred ninety-nine thousand, nine hundred sixty-three".