129253397 has 24 divisors (see below), whose sum is σ = 169390656. Its totient is φ = 96235776.

The previous prime is 129253381. The next prime is 129253417. The reversal of 129253397 is 793352921.

It is a happy number.

It is not a de Polignac number, because 129253397 - 2⁴ = 129253381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129253357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16898 + ... + 23324.

It is an arithmetic number, because the mean of its divisors is an integer number (7057944).

Almost surely, 2^129253397 is an apocalyptic number.

129253397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

129253397 is a deficient number, since it is larger than the sum of its proper divisors (40137259).

129253397 is a wasteful number, since it uses less digits than its factorization.

129253397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477 (or 6464 counting only the distinct ones).

The product of its digits is 102060, while the sum is 41.

The square root of 129253397 is about 11368.9663998096. The cubic root of 129253397 is about 505.6080601554.

The spelling of 129253397 in words is "one hundred twenty-nine million, two hundred fifty-three thousand, three hundred ninety-seven".