129798059 has 4 divisors (see below), whose sum is σ = 129848616. Its totient is φ = 129747504.

The previous prime is 129798001. The next prime is 129798073. The reversal of 129798059 is 950897921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129798059 - 2⁸ = 129797803 is a prime.

It is a super-2 number, since 2×129798059² = 33695072240334962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129797998 and 129798016.

It is not an unprimeable number, because it can be changed into a prime (129798259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21209 + ... + 26634.

It is an arithmetic number, because the mean of its divisors is an integer number (32462154).

Almost surely, 2^129798059 is an apocalyptic number.

129798059 is a deficient number, since it is larger than the sum of its proper divisors (50557).

129798059 is an equidigital number, since it uses as much as digits as its factorization.

129798059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50556.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 129798059 is about 11392.8951105503. The cubic root of 129798059 is about 506.3172603008.

The spelling of 129798059 in words is "one hundred twenty-nine million, seven hundred ninety-eight thousand, fifty-nine".