79194149 has 2 divisors, whose sum is σ = 79194150. Its totient is φ = 79194148.

The previous prime is 79194133. The next prime is 79194151. The reversal of 79194149 is 94149197.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69472225 + 9721924 = 8335^2 + 3118^2 .

It is a cyclic number.

It is not a de Polignac number, because 79194149 - 2⁴ = 79194133 is a prime.

It is a Sophie Germain prime.

Together with 79194151, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79194179) 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, 39597074 + 39597075.

It is an arithmetic number, because the mean of its divisors is an integer number (39597075).

Almost surely, 2^79194149 is an apocalyptic number.

It is an amenable number.

79194149 is a deficient number, since it is larger than the sum of its proper divisors (1).

79194149 is an equidigital number, since it uses as much as digits as its factorization.

79194149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 79194149 is about 8899.1094498270. The cubic root of 79194149 is about 429.4352582590.

The spelling of 79194149 in words is "seventy-nine million, one hundred ninety-four thousand, one hundred forty-nine".