79963 has 4 divisors (see below), whose sum is σ = 86128. Its totient is φ = 73800.

The previous prime is 79943. The next prime is 79967. The reversal of 79963 is 36997.

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

It is a cyclic number.

It is not a de Polignac number, because 79963 - 2⁹ = 79451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (21532).

2⁷⁹⁹⁶³ is an apocalyptic number.

79963 is a deficient number, since it is larger than the sum of its proper divisors (6165).

79963 is a wasteful number, since it uses less digits than its factorization.

79963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164.

The product of its digits is 10206, while the sum is 34.

The square root of 79963 is about 282.7772975329. Note that the first 3 decimals coincide. The cubic root of 79963 is about 43.0820499360.

Adding to 79963 its sum of digits (34), we get a palindrome (79997).

The spelling of 79963 in words is "seventy-nine thousand, nine hundred sixty-three".