129838337 has 2 divisors, whose sum is σ = 129838338. Its totient is φ = 129838336.

The previous prime is 129838327. The next prime is 129838363. The reversal of 129838337 is 733838921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80712256 + 49126081 = 8984^2 + 7009^2 .

It is an emirp because it is prime and its reverse (733838921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129838337 - 2⁴ = 129838321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129838327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64919168 + 64919169.

It is an arithmetic number, because the mean of its divisors is an integer number (64919169).

Almost surely, 2^129838337 is an apocalyptic number.

It is an amenable number.

129838337 is a deficient number, since it is larger than the sum of its proper divisors (1).

129838337 is an equidigital number, since it uses as much as digits as its factorization.

129838337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 129838337 is about 11394.6626540675. The cubic root of 129838337 is about 506.3696271279.

The spelling of 129838337 in words is "one hundred twenty-nine million, eight hundred thirty-eight thousand, three hundred thirty-seven".