129013698 has 16 divisors (see below), whose sum is σ = 281484576. Its totient is φ = 39095040.

The previous prime is 129013639. The next prime is 129013727. The reversal of 129013698 is 896310921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977311 + ... + 977442.

It is an arithmetic number, because the mean of its divisors is an integer number (17592786).

Almost surely, 2^129013698 is an apocalyptic number.

129013698 is an abundant number, since it is smaller than the sum of its proper divisors (152470878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129013698 is a wasteful number, since it uses less digits than its factorization.

129013698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954769.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 129013698 is about 11358.4196964190. The cubic root of 129013698 is about 505.2953185589.

The spelling of 129013698 in words is "one hundred twenty-nine million, thirteen thousand, six hundred ninety-eight".