129898251396 has 45 divisors (see below), whose sum is σ = 339596648391. Its totient is φ = 43297254648.

The previous prime is 129898251383. The next prime is 129898251397. The reversal of 129898251396 is 693152898921.

The square root of 129898251396 is 360414.

It is a perfect power (a square), and thus also a powerful number.

129898251396 is a `hidden beast` number, since 1 + 29 + 8 + 9 + 8 + 2 + 513 + 96 = 666.

It is not an unprimeable number, because it can be changed into a prime (129898251397) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6477441 + ... + 6497463.

Almost surely, 2^129898251396 is an apocalyptic number.

129898251396 is the 360414-th square number.

It is an amenable number.

129898251396 is an abundant number, since it is smaller than the sum of its proper divisors (209698396995).

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

129898251396 is an frugal number, since it uses more digits than its factorization.

129898251396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40062 (or 20028 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 63.

The spelling of 129898251396 in words is "one hundred twenty-nine billion, eight hundred ninety-eight million, two hundred fifty-one thousand, three hundred ninety-six".