79796589869 has 4 divisors (see below), whose sum is σ = 79797322140. Its totient is φ = 79795857600.

The previous prime is 79796589839. The next prime is 79796589923. The reversal of 79796589869 is 96898569797.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96898569797 = 29 ⋅3341329993.

It can be written as a sum of positive squares in 2 ways, for example, as 64929664969 + 14866924900 = 254813^2 + 121930^2 .

It is a cyclic number.

It is not a de Polignac number, because 79796589869 - 2³⁶ = 11077113133 is a prime.

It is a super-2 number, since 2×79796589869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79796589809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166334 + ... + 432735.

It is an arithmetic number, because the mean of its divisors is an integer number (19949330535).

Almost surely, 2^79796589869 is an apocalyptic number.

It is an amenable number.

79796589869 is a deficient number, since it is larger than the sum of its proper divisors (732271).

79796589869 is a wasteful number, since it uses less digits than its factorization.

79796589869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732270.

The product of its digits is 3703553280, while the sum is 83.

The spelling of 79796589869 in words is "seventy-nine billion, seven hundred ninety-six million, five hundred eighty-nine thousand, eight hundred sixty-nine".