129891853 has 8 divisors (see below), whose sum is σ = 159867008. Its totient is φ = 102771504.

The previous prime is 129891803. The next prime is 129891857. The reversal of 129891853 is 358198921.

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 129891853 - 2¹³ = 129883661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129891857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713601 + ... + 713782.

It is an arithmetic number, because the mean of its divisors is an integer number (19983376).

Almost surely, 2^129891853 is an apocalyptic number.

129891853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129891853 is a deficient number, since it is larger than the sum of its proper divisors (29975155).

129891853 is a wasteful number, since it uses less digits than its factorization.

129891853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427403.

The product of its digits is 155520, while the sum is 46.

The square root of 129891853 is about 11397.0107045664. The cubic root of 129891853 is about 506.4391883871.

The spelling of 129891853 in words is "one hundred twenty-nine million, eight hundred ninety-one thousand, eight hundred fifty-three".