129746999 has 2 divisors, whose sum is σ = 129747000. Its totient is φ = 129746998.

The previous prime is 129746989. The next prime is 129747047. The reversal of 129746999 is 999647921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129746999 - 2¹² = 129742903 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129746989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64873499 + 64873500.

It is an arithmetic number, because the mean of its divisors is an integer number (64873500).

Almost surely, 2^129746999 is an apocalyptic number.

129746999 is a deficient number, since it is larger than the sum of its proper divisors (1).

129746999 is an equidigital number, since it uses as much as digits as its factorization.

129746999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 56.

The square root of 129746999 is about 11390.6540198533. The cubic root of 129746999 is about 506.2508598471.

The spelling of 129746999 in words is "one hundred twenty-nine million, seven hundred forty-six thousand, nine hundred ninety-nine".