129872983 has 8 divisors (see below), whose sum is σ = 133563600. Its totient is φ = 126232128.

The previous prime is 129872969. The next prime is 129872993. The reversal of 129872983 is 389278921.

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-129872983 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129872903) 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, 7116 + ... + 17617.

It is an arithmetic number, because the mean of its divisors is an integer number (16695450).

Almost surely, 2^129872983 is an apocalyptic number.

129872983 is a deficient number, since it is larger than the sum of its proper divisors (3690617).

129872983 is an equidigital number, since it uses as much as digits as its factorization.

129872983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24881.

The product of its digits is 435456, while the sum is 49.

The square root of 129872983 is about 11396.1828258413. The cubic root of 129872983 is about 506.4146629324.

The spelling of 129872983 in words is "one hundred twenty-nine million, eight hundred seventy-two thousand, nine hundred eighty-three".