79986229 has 2 divisors, whose sum is σ = 79986230. Its totient is φ = 79986228.

The previous prime is 79986227. The next prime is 79986233. The reversal of 79986229 is 92268997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56927025 + 23059204 = 7545^2 + 4802^2 .

It is a cyclic number.

It is not a de Polignac number, because 79986229 - 2¹ = 79986227 is a prime.

Together with 79986227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79986227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39993114 + 39993115.

It is an arithmetic number, because the mean of its divisors is an integer number (39993115).

Almost surely, 2^79986229 is an apocalyptic number.

It is an amenable number.

79986229 is a deficient number, since it is larger than the sum of its proper divisors (1).

79986229 is an equidigital number, since it uses as much as digits as its factorization.

79986229 is an evil number, because the sum of its binary digits is even.

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

The square root of 79986229 is about 8943.5020545645. The cubic root of 79986229 is about 430.8622126542.

The spelling of 79986229 in words is "seventy-nine million, nine hundred eighty-six thousand, two hundred twenty-nine".