129413677 has 2 divisors, whose sum is σ = 129413678. Its totient is φ = 129413676.

The previous prime is 129413659. The next prime is 129413681. The reversal of 129413677 is 776314921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74149321 + 55264356 = 8611^2 + 7434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129413677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129413657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64706838 + 64706839.

It is an arithmetic number, because the mean of its divisors is an integer number (64706839).

Almost surely, 2^129413677 is an apocalyptic number.

It is an amenable number.

129413677 is a deficient number, since it is larger than the sum of its proper divisors (1).

129413677 is an equidigital number, since it uses as much as digits as its factorization.

129413677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 129413677 is about 11376.0132295985. The cubic root of 129413677 is about 505.8169660399.

The spelling of 129413677 in words is "one hundred twenty-nine million, four hundred thirteen thousand, six hundred seventy-seven".