129898853 has 18 divisors (see below), whose sum is σ = 160535826. Its totient is φ = 104780928.

The previous prime is 129898841. The next prime is 129898883. The reversal of 129898853 is 358898921.

It can be written as a sum of positive squares in 3 ways, for example, as 17581249 + 112317604 = 4193^2 + 10598^2 .

It is not a de Polignac number, because 129898853 - 2⁶ = 129898789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129898795 and 129898804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129898883) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9575 + ... + 18747.

It is an arithmetic number, because the mean of its divisors is an integer number (8918657).

Almost surely, 2^129898853 is an apocalyptic number.

It is an amenable number.

129898853 is a deficient number, since it is larger than the sum of its proper divisors (30636973).

129898853 is an equidigital number, since it uses as much as digits as its factorization.

129898853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221 (or 9197 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 129898853 is about 11397.3177984998. The cubic root of 129898853 is about 506.4482857261.

The spelling of 129898853 in words is "one hundred twenty-nine million, eight hundred ninety-eight thousand, eight hundred fifty-three".