8129913 has 8 divisors (see below), whose sum is σ = 11825376. Its totient is φ = 4927200.

The previous prime is 8129909. The next prime is 8129917. The reversal of 8129913 is 3199218.

It is an interprime number because it is at equal distance from previous prime (8129909) and next prime (8129917).

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

It is not a de Polignac number, because 8129913 - 2² = 8129909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 246361 = 8129913 / (8 + 1 + 2 + 9 + 9 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (8129917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123148 + ... + 123213.

It is an arithmetic number, because the mean of its divisors is an integer number (1478172).

Almost surely, 2^8129913 is an apocalyptic number.

It is an amenable number.

8129913 is a deficient number, since it is larger than the sum of its proper divisors (3695463).

8129913 is a wasteful number, since it uses less digits than its factorization.

8129913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246375.

The product of its digits is 3888, while the sum is 33.

The square root of 8129913 is about 2851.3002297198. The cubic root of 8129913 is about 201.0768004329.

It can be divided in two parts, 8 and 129913, that added together give a palindrome (129921).

The spelling of 8129913 in words is "eight million, one hundred twenty-nine thousand, nine hundred thirteen".