129398 has 16 divisors (see below), whose sum is σ = 211680. Its totient is φ = 59136.

The previous prime is 129379. The next prime is 129401. The reversal of 129398 is 893921.

It is a congruent number.

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, 1286 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2¹²⁹³⁹⁸ is an apocalyptic number.

129398 is a deficient number, since it is larger than the sum of its proper divisors (82282).

129398 is a wasteful number, since it uses less digits than its factorization.

129398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151.

The product of its digits is 3888, while the sum is 32.

The square root of 129398 is about 359.7193350377. The cubic root of 129398 is about 50.5796540551.

The spelling of 129398 in words is "one hundred twenty-nine thousand, three hundred ninety-eight".