129797 has 8 divisors (see below), whose sum is σ = 138240. Its totient is φ = 121680.

The previous prime is 129793. The next prime is 129803. The reversal of 129797 is 797921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129797 - 2² = 129793 is a prime.

It is a super-2 number, since 2×129797² = 33694522418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604 + ... + 1682.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2¹²⁹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

129797 is a deficient number, since it is larger than the sum of its proper divisors (8443).

129797 is an equidigital number, since it uses as much as digits as its factorization.

129797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

The product of its digits is 7938, while the sum is 35.

The square root of 129797 is about 360.2735072136. The cubic root of 129797 is about 50.6315883312.

The spelling of 129797 in words is "one hundred twenty-nine thousand, seven hundred ninety-seven".