129397337 has 2 divisors, whose sum is σ = 129397338. Its totient is φ = 129397336.

The previous prime is 129397313. The next prime is 129397393. The reversal of 129397337 is 733793921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93624976 + 35772361 = 9676^2 + 5981^2 .

It is a cyclic number.

It is not a de Polignac number, because 129397337 - 2¹² = 129393241 is a prime.

It is not a weakly prime, because it can be changed into another prime (129397237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64698668 + 64698669.

It is an arithmetic number, because the mean of its divisors is an integer number (64698669).

Almost surely, 2^129397337 is an apocalyptic number.

It is an amenable number.

129397337 is a deficient number, since it is larger than the sum of its proper divisors (1).

129397337 is an equidigital number, since it uses as much as digits as its factorization.

129397337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 44.

The square root of 129397337 is about 11375.2950291410. The cubic root of 129397337 is about 505.7956766953.

The spelling of 129397337 in words is "one hundred twenty-nine million, three hundred ninety-seven thousand, three hundred thirty-seven".