13129999 has 8 divisors (see below), whose sum is σ = 13421232. Its totient is φ = 12841920.

The previous prime is 13129979. The next prime is 13130003. The reversal of 13129999 is 99992131.

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 13129999 - 2¹¹ = 13127951 is a prime.

It is a Duffinian number.

13129999 is a modest number, since divided by 9999 gives 1312 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8877 + ... + 10249.

It is an arithmetic number, because the mean of its divisors is an integer number (1677654).

Almost surely, 2^13129999 is an apocalyptic number.

13129999 is a deficient number, since it is larger than the sum of its proper divisors (291233).

13129999 is a wasteful number, since it uses less digits than its factorization.

13129999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577.

The product of its digits is 39366, while the sum is 43.

The square root of 13129999 is about 3623.5340484119. The cubic root of 13129999 is about 235.9146428364.

It can be divided in two parts, 1312 and 9999, that added together give a palindrome (11311).

The spelling of 13129999 in words is "thirteen million, one hundred twenty-nine thousand, nine hundred ninety-nine".