129994927 has 2 divisors, whose sum is σ = 129994928. Its totient is φ = 129994926.

The previous prime is 129994897. The next prime is 129994967. The reversal of 129994927 is 729499921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129994927 - 2¹⁹ = 129470639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129994967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64997463 + 64997464.

It is an arithmetic number, because the mean of its divisors is an integer number (64997464).

Almost surely, 2^129994927 is an apocalyptic number.

129994927 is a deficient number, since it is larger than the sum of its proper divisors (1).

129994927 is an equidigital number, since it uses as much as digits as its factorization.

129994927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 129994927 is about 11401.5317830544. The cubic root of 129994927 is about 506.5731123915.

The spelling of 129994927 in words is "one hundred twenty-nine million, nine hundred ninety-four thousand, nine hundred twenty-seven".