129696893 has 8 divisors (see below), whose sum is σ = 137582712. Its totient is φ = 121839616.

The previous prime is 129696881. The next prime is 129696911. The reversal of 129696893 is 398696921.

It can be written as a sum of positive squares in 4 ways, for example, as 33124 + 129663769 = 182^2 + 11387^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129696893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129696823) 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, 2621 + ... + 16317.

It is an arithmetic number, because the mean of its divisors is an integer number (17197839).

Almost surely, 2^129696893 is an apocalyptic number.

It is an amenable number.

129696893 is a deficient number, since it is larger than the sum of its proper divisors (7885819).

129696893 is a wasteful number, since it uses less digits than its factorization.

129696893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271.

The product of its digits is 1259712, while the sum is 53.

The square root of 129696893 is about 11388.4543727408. The cubic root of 129696893 is about 506.1856830754.

It can be divided in two parts, 1296 and 96893, that added together give a palindrome (98189).

The spelling of 129696893 in words is "one hundred twenty-nine million, six hundred ninety-six thousand, eight hundred ninety-three".