79168669 has 2 divisors, whose sum is σ = 79168670. Its totient is φ = 79168668.

The previous prime is 79168651. The next prime is 79168681. The reversal of 79168669 is 96686197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44063044 + 35105625 = 6638^2 + 5925^2 .

It is an emirp because it is prime and its reverse (96686197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79168669 - 2²¹ = 77071517 is a prime.

It is a super-2 number, since 2×79168669² = 12535356302463122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79168769) 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 as a sum of consecutive naturals, namely, 39584334 + 39584335.

It is an arithmetic number, because the mean of its divisors is an integer number (39584335).

Almost surely, 2^79168669 is an apocalyptic number.

It is an amenable number.

79168669 is a deficient number, since it is larger than the sum of its proper divisors (1).

79168669 is an equidigital number, since it uses as much as digits as its factorization.

79168669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 79168669 is about 8897.6777307340. The cubic root of 79168669 is about 429.3891976841.

The spelling of 79168669 in words is "seventy-nine million, one hundred sixty-eight thousand, six hundred sixty-nine".