129951898 has 16 divisors (see below), whose sum is σ = 200548224. Its totient is φ = 63123040.

The previous prime is 129951889. The next prime is 129951911. The reversal of 129951898 is 898159921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7833 + ... + 17923.

It is an arithmetic number, because the mean of its divisors is an integer number (12534264).

Almost surely, 2^129951898 is an apocalyptic number.

129951898 is a deficient number, since it is larger than the sum of its proper divisors (70596326).

129951898 is a wasteful number, since it uses less digits than its factorization.

129951898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10277.

The product of its digits is 466560, while the sum is 52.

The square root of 129951898 is about 11399.6446435843. The cubic root of 129951898 is about 506.5172134411.

The spelling of 129951898 in words is "one hundred twenty-nine million, nine hundred fifty-one thousand, eight hundred ninety-eight".