129997183 has 12 divisors (see below), whose sum is σ = 140561568. Its totient is φ = 120137760.

The previous prime is 129997171. The next prime is 129997193. The reversal of 129997183 is 381799921.

It is not a de Polignac number, because 129997183 - 2⁵ = 129997151 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 (129997103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10410 + ... + 19192.

It is an arithmetic number, because the mean of its divisors is an integer number (11713464).

Almost surely, 2^129997183 is an apocalyptic number.

129997183 is a deficient number, since it is larger than the sum of its proper divisors (10564385).

129997183 is an equidigital number, since it uses as much as digits as its factorization.

129997183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8862 (or 8843 counting only the distinct ones).

The product of its digits is 244944, while the sum is 49.

The square root of 129997183 is about 11401.6307167001. The cubic root of 129997183 is about 506.5760428195.

The spelling of 129997183 in words is "one hundred twenty-nine million, nine hundred ninety-seven thousand, one hundred eighty-three".