129716747 has 2 divisors, whose sum is σ = 129716748. Its totient is φ = 129716746.

The previous prime is 129716737. The next prime is 129716753. The reversal of 129716747 is 747617921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129716747 - 2¹² = 129712651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129716698 and 129716707.

It is not a weakly prime, because it can be changed into another prime (129716707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64858373 + 64858374.

It is an arithmetic number, because the mean of its divisors is an integer number (64858374).

Almost surely, 2^129716747 is an apocalyptic number.

129716747 is a deficient number, since it is larger than the sum of its proper divisors (1).

129716747 is an equidigital number, since it uses as much as digits as its factorization.

129716747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 129716747 is about 11389.3260116655. The cubic root of 129716747 is about 506.2115107252.

The spelling of 129716747 in words is "one hundred twenty-nine million, seven hundred sixteen thousand, seven hundred forty-seven".