79663963 has 4 divisors (see below), whose sum is σ = 79708240. Its totient is φ = 79619688.

The previous prime is 79663939. The next prime is 79663967. The reversal of 79663963 is 36936697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36936697 = 7 ⋅5276671.

It is a cyclic number.

It is not a de Polignac number, because 79663963 - 2¹⁷ = 79532891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79663967) 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, 19320 + ... + 23077.

It is an arithmetic number, because the mean of its divisors is an integer number (19927060).

Almost surely, 2^79663963 is an apocalyptic number.

79663963 is a deficient number, since it is larger than the sum of its proper divisors (44277).

79663963 is a wasteful number, since it uses less digits than its factorization.

79663963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44276.

The product of its digits is 1102248, while the sum is 49.

The square root of 79663963 is about 8925.4671026227. The cubic root of 79663963 is about 430.2827831636.

The spelling of 79663963 in words is "seventy-nine million, six hundred sixty-three thousand, nine hundred sixty-three".