129738396 has 24 divisors (see below), whose sum is σ = 309764224. Its totient is φ = 42240240.

The previous prime is 129738341. The next prime is 129738397. The reversal of 129738396 is 693837921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129738397) by changing a digit.

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, 125200 + ... + 126231.

Almost surely, 2^129738396 is an apocalyptic number.

It is an amenable number.

129738396 is an abundant number, since it is smaller than the sum of its proper divisors (180025828).

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

129738396 is a wasteful number, since it uses less digits than its factorization.

129738396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251481 (or 251479 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 129738396 is about 11390.2763794387. The cubic root of 129738396 is about 506.2396704492.

It can be divided in two parts, 1297 and 38396, that added together give a palindrome (39693).

The spelling of 129738396 in words is "one hundred twenty-nine million, seven hundred thirty-eight thousand, three hundred ninety-six".