129370349 has 2 divisors, whose sum is σ = 129370350. Its totient is φ = 129370348.

The previous prime is 129370327. The next prime is 129370361. The reversal of 129370349 is 943073921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106234249 + 23136100 = 10307^2 + 4810^2 .

It is a cyclic number.

It is not a de Polignac number, because 129370349 - 2²⁰ = 128321773 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 (129370379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64685174 + 64685175.

It is an arithmetic number, because the mean of its divisors is an integer number (64685175).

Almost surely, 2^129370349 is an apocalyptic number.

It is an amenable number.

129370349 is a deficient number, since it is larger than the sum of its proper divisors (1).

129370349 is an equidigital number, since it uses as much as digits as its factorization.

129370349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 129370349 is about 11374.1087123343. The cubic root of 129370349 is about 505.7605101734.

The spelling of 129370349 in words is "one hundred twenty-nine million, three hundred seventy thousand, three hundred forty-nine".