129417077 has 2 divisors, whose sum is σ = 129417078. Its totient is φ = 129417076.

The previous prime is 129417059. The next prime is 129417091. The reversal of 129417077 is 770714921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67338436 + 62078641 = 8206^2 + 7879^2 .

It is a cyclic number.

It is not a de Polignac number, because 129417077 - 2¹⁴ = 129400693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129417077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129417017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64708538 + 64708539.

It is an arithmetic number, because the mean of its divisors is an integer number (64708539).

Almost surely, 2^129417077 is an apocalyptic number.

It is an amenable number.

129417077 is a deficient number, since it is larger than the sum of its proper divisors (1).

129417077 is an equidigital number, since it uses as much as digits as its factorization.

129417077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 129417077 is about 11376.1626658553. The cubic root of 129417077 is about 505.8213956660.

The spelling of 129417077 in words is "one hundred twenty-nine million, four hundred seventeen thousand, seventy-seven".