129253396 has 6 divisors (see below), whose sum is σ = 226193450. Its totient is φ = 64626696.

The previous prime is 129253381. The next prime is 129253417. The reversal of 129253396 is 693352921.

It can be written as a sum of positive squares in only one way, i.e., 84897796 + 44355600 = 9214^2 + 6660^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16156671 + ... + 16156678.

Almost surely, 2^129253396 is an apocalyptic number.

It is an amenable number.

129253396 is a deficient number, since it is larger than the sum of its proper divisors (96940054).

129253396 is a wasteful number, since it uses less digits than its factorization.

129253396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32313353 (or 32313351 counting only the distinct ones).

The product of its digits is 87480, while the sum is 40.

The square root of 129253396 is about 11368.9663558302. The cubic root of 129253396 is about 505.6080588515.

The spelling of 129253396 in words is "one hundred twenty-nine million, two hundred fifty-three thousand, three hundred ninety-six".