129933997 has 2 divisors, whose sum is σ = 129933998. Its totient is φ = 129933996.

The previous prime is 129933977. The next prime is 129934031. The reversal of 129933997 is 799339921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129709321 + 224676 = 11389^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 129933997 - 2¹⁵ = 129901229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129933967) 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, 64966998 + 64966999.

It is an arithmetic number, because the mean of its divisors is an integer number (64966999).

Almost surely, 2^129933997 is an apocalyptic number.

It is an amenable number.

129933997 is a deficient number, since it is larger than the sum of its proper divisors (1).

129933997 is an equidigital number, since it uses as much as digits as its factorization.

129933997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 826686, while the sum is 52.

The square root of 129933997 is about 11398.8594604899. The cubic root of 129933997 is about 506.4939546273.

The spelling of 129933997 in words is "one hundred twenty-nine million, nine hundred thirty-three thousand, nine hundred ninety-seven".