129349393 has 2 divisors, whose sum is σ = 129349394. Its totient is φ = 129349392.

The previous prime is 129349361. The next prime is 129349399. The reversal of 129349393 is 393943921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119508624 + 9840769 = 10932^2 + 3137^2 .

It is a cyclic number.

It is not a de Polignac number, because 129349393 - 2⁵ = 129349361 is a prime.

It is not a weakly prime, because it can be changed into another prime (129349399) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64674696 + 64674697.

It is an arithmetic number, because the mean of its divisors is an integer number (64674697).

Almost surely, 2^129349393 is an apocalyptic number.

It is an amenable number.

129349393 is a deficient number, since it is larger than the sum of its proper divisors (1).

129349393 is an equidigital number, since it uses as much as digits as its factorization.

129349393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 43.

The square root of 129349393 is about 11373.1874599868. The cubic root of 129349393 is about 505.7332002330.

The spelling of 129349393 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, three hundred ninety-three".