79492129 has 2 divisors, whose sum is σ = 79492130. Its totient is φ = 79492128.

The previous prime is 79492111. The next prime is 79492139. The reversal of 79492129 is 92129497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78357904 + 1134225 = 8852^2 + 1065^2 .

It is an emirp because it is prime and its reverse (92129497) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79492129 is a prime.

It is not a weakly prime, because it can be changed into another prime (79492139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39746064 + 39746065.

It is an arithmetic number, because the mean of its divisors is an integer number (39746065).

Almost surely, 2^79492129 is an apocalyptic number.

It is an amenable number.

79492129 is a deficient number, since it is larger than the sum of its proper divisors (1).

79492129 is an equidigital number, since it uses as much as digits as its factorization.

79492129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 79492129 is about 8915.8358553755. The cubic root of 79492129 is about 429.9731892424.

The spelling of 79492129 in words is "seventy-nine million, four hundred ninety-two thousand, one hundred twenty-nine".