129620983 has 8 divisors (see below), whose sum is σ = 136879920. Its totient is φ = 122405760.

The previous prime is 129620957. The next prime is 129620993. The reversal of 129620983 is 389026921.

It is a happy number.

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-129620983 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 (129620993) 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, 4738 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (17109990).

Almost surely, 2^129620983 is an apocalyptic number.

129620983 is a deficient number, since it is larger than the sum of its proper divisors (7258937).

129620983 is a wasteful number, since it uses less digits than its factorization.

129620983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21857.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 129620983 is about 11385.1211236420. The cubic root of 129620983 is about 506.0869090461.

The spelling of 129620983 in words is "one hundred twenty-nine million, six hundred twenty thousand, nine hundred eighty-three".