129000877 has 2 divisors, whose sum is σ = 129000878. Its totient is φ = 129000876.

The previous prime is 129000847. The next prime is 129000901. The reversal of 129000877 is 778000921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126090441 + 2910436 = 11229^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 129000877 - 2¹¹ = 128998829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129000847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64500438 + 64500439.

It is an arithmetic number, because the mean of its divisors is an integer number (64500439).

Almost surely, 2^129000877 is an apocalyptic number.

It is an amenable number.

129000877 is a deficient number, since it is larger than the sum of its proper divisors (1).

129000877 is an equidigital number, since it uses as much as digits as its factorization.

129000877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 129000877 is about 11357.8552993072. The cubic root of 129000877 is about 505.2785797527.

The spelling of 129000877 in words is "one hundred twenty-nine million, eight hundred seventy-seven", and thus it is an aban number.