9997963 has 4 divisors (see below), whose sum is σ = 10167480. Its totient is φ = 9828448.

The previous prime is 9997957. The next prime is 9997969. The reversal of 9997963 is 3697999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3697999 = 131 ⋅28229.

It is an interprime number because it is at equal distance from previous prime (9997957) and next prime (9997969).

It is a cyclic number.

It is not a de Polignac number, because 9997963 - 2⁹ = 9997451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9997963.

It is not an unprimeable number, because it can be changed into a prime (9997969) 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 in 3 ways as a sum of consecutive naturals, for example, 84670 + ... + 84787.

It is an arithmetic number, because the mean of its divisors is an integer number (2541870).

Almost surely, 2^9997963 is an apocalyptic number.

9997963 is a deficient number, since it is larger than the sum of its proper divisors (169517).

9997963 is a wasteful number, since it uses less digits than its factorization.

9997963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169516.

The product of its digits is 826686, while the sum is 52.

The square root of 9997963 is about 3161.9555657852. The cubic root of 9997963 is about 215.4288393982.

The spelling of 9997963 in words is "nine million, nine hundred ninety-seven thousand, nine hundred sixty-three".