129897573 has 16 divisors (see below), whose sum is σ = 188771520. Its totient is φ = 78971904.

The previous prime is 129897563. The next prime is 129897577. The reversal of 129897573 is 375798921.

It is not a de Polignac number, because 129897573 - 2⁴ = 129897557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129897577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16828 + ... + 23301.

It is an arithmetic number, because the mean of its divisors is an integer number (11798220).

Almost surely, 2^129897573 is an apocalyptic number.

129897573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129897573 is a deficient number, since it is larger than the sum of its proper divisors (58873947).

129897573 is a wasteful number, since it uses less digits than its factorization.

129897573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40228.

The product of its digits is 952560, while the sum is 51.

The square root of 129897573 is about 11397.2616447987. The cubic root of 129897573 is about 506.4466222371.

The spelling of 129897573 in words is "one hundred twenty-nine million, eight hundred ninety-seven thousand, five hundred seventy-three".