129293399 has 2 divisors, whose sum is σ = 129293400. Its totient is φ = 129293398.

The previous prime is 129293383. The next prime is 129293407. The reversal of 129293399 is 993392921.

It is a strong prime.

It is an emirp because it is prime and its reverse (993392921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129293399 - 2⁴ = 129293383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129293369) 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, 64646699 + 64646700.

It is an arithmetic number, because the mean of its divisors is an integer number (64646700).

Almost surely, 2^129293399 is an apocalyptic number.

129293399 is a deficient number, since it is larger than the sum of its proper divisors (1).

129293399 is an equidigital number, since it uses as much as digits as its factorization.

129293399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 236196, while the sum is 47.

The square root of 129293399 is about 11370.7255265440. The cubic root of 129293399 is about 505.6602141618.

The spelling of 129293399 in words is "one hundred twenty-nine million, two hundred ninety-three thousand, three hundred ninety-nine".