129848865 has 16 divisors (see below), whose sum is σ = 209599488. Its totient is φ = 68638976.

The previous prime is 129848843. The next prime is 129848879. The reversal of 129848865 is 568848921.

It is a cyclic number.

It is not a de Polignac number, because 129848865 - 2¹⁰ = 129847841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36609 + ... + 39998.

It is an arithmetic number, because the mean of its divisors is an integer number (13099968).

Almost surely, 2^129848865 is an apocalyptic number.

129848865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129848865 is a deficient number, since it is larger than the sum of its proper divisors (79750623).

129848865 is a wasteful number, since it uses less digits than its factorization.

129848865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76728.

The product of its digits is 1105920, while the sum is 51.

The square root of 129848865 is about 11395.1246153783. The cubic root of 129848865 is about 506.3833131610.

The spelling of 129848865 in words is "one hundred twenty-nine million, eight hundred forty-eight thousand, eight hundred sixty-five".