770000129 has 2 divisors, whose sum is σ = 770000130. Its totient is φ = 770000128.

The previous prime is 770000051. The next prime is 770000149. The reversal of 770000129 is 921000077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545689600 + 224310529 = 23360^2 + 14977^2 .

It is an emirp because it is prime and its reverse (921000077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 770000129 - 2⁸ = 769999873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 770000098 and 770000107.

It is not a weakly prime, because it can be changed into another prime (770000149) 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, 385000064 + 385000065.

It is an arithmetic number, because the mean of its divisors is an integer number (385000065).

Almost surely, 2^770000129 is an apocalyptic number.

It is an amenable number.

770000129 is a deficient number, since it is larger than the sum of its proper divisors (1).

770000129 is an equidigital number, since it uses as much as digits as its factorization.

770000129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 770000129 is about 27748.8761754418. The cubic root of 770000129 is about 916.5656966179.

The spelling of 770000129 in words is "seven hundred seventy million, one hundred twenty-nine", and thus it is an aban number.