129971193 has 8 divisors (see below), whose sum is σ = 189049056. Its totient is φ = 78770400.

The previous prime is 129971167. The next prime is 129971207. The reversal of 129971193 is 391179921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129971193 - 2⁶ = 129971129 is a prime.

It is a super-2 number, since 2×129971193² = 33785022019686498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129971123) 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, 1969228 + ... + 1969293.

It is an arithmetic number, because the mean of its divisors is an integer number (23631132).

Almost surely, 2^129971193 is an apocalyptic number.

It is an amenable number.

129971193 is a deficient number, since it is larger than the sum of its proper divisors (59077863).

129971193 is a wasteful number, since it uses less digits than its factorization.

129971193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938535.

The product of its digits is 30618, while the sum is 42.

The square root of 129971193 is about 11400.4909104828. The cubic root of 129971193 is about 506.5422810908.

The spelling of 129971193 in words is "one hundred twenty-nine million, nine hundred seventy-one thousand, one hundred ninety-three".