129092993 has 2 divisors, whose sum is σ = 129092994. Its totient is φ = 129092992.

The previous prime is 129092989. The next prime is 129093047. The reversal of 129092993 is 399290921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67108864 + 61984129 = 8192^2 + 7873^2 .

It is a cyclic number.

It is not a de Polignac number, because 129092993 - 2² = 129092989 is a prime.

It is not a weakly prime, because it can be changed into another prime (129092933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64546496 + 64546497.

It is an arithmetic number, because the mean of its divisors is an integer number (64546497).

Almost surely, 2^129092993 is an apocalyptic number.

It is an amenable number.

129092993 is a deficient number, since it is larger than the sum of its proper divisors (1).

129092993 is an equidigital number, since it uses as much as digits as its factorization.

129092993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 129092993 is about 11361.9097426445. The cubic root of 129092993 is about 505.3988196778.

The spelling of 129092993 in words is "one hundred twenty-nine million, ninety-two thousand, nine hundred ninety-three".