129899485 has 16 divisors (see below), whose sum is σ = 166340160. Its totient is φ = 97096320.

The previous prime is 129899479. The next prime is 129899491. The reversal of 129899485 is 584998921.

It is an interprime number because it is at equal distance from previous prime (129899479) and next prime (129899491).

It is not a de Polignac number, because 129899485 - 2³ = 129899477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2431 + ... + 16300.

It is an arithmetic number, because the mean of its divisors is an integer number (10396260).

Almost surely, 2^129899485 is an apocalyptic number.

It is an amenable number.

129899485 is a deficient number, since it is larger than the sum of its proper divisors (36440675).

129899485 is a wasteful number, since it uses less digits than its factorization.

129899485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18828.

The product of its digits is 1866240, while the sum is 55.

The square root of 129899485 is about 11397.3455242877. The cubic root of 129899485 is about 506.4491070697.

The spelling of 129899485 in words is "one hundred twenty-nine million, eight hundred ninety-nine thousand, four hundred eighty-five".