129793449 has 16 divisors (see below), whose sum is σ = 176904000. Its totient is φ = 84616896.

The previous prime is 129793441. The next prime is 129793459. The reversal of 129793449 is 944397921.

It is a happy number.

It is not a de Polignac number, because 129793449 - 2³ = 129793441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129793398 and 129793407.

It is not an unprimeable number, because it can be changed into a prime (129793441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54322 + ... + 56660.

It is an arithmetic number, because the mean of its divisors is an integer number (11056500).

Almost surely, 2^129793449 is an apocalyptic number.

It is an amenable number.

129793449 is a deficient number, since it is larger than the sum of its proper divisors (47110551).

129793449 is a wasteful number, since it uses less digits than its factorization.

129793449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744.

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

The square root of 129793449 is about 11392.6927896788. The cubic root of 129793449 is about 506.3112659888.

The spelling of 129793449 in words is "one hundred twenty-nine million, seven hundred ninety-three thousand, four hundred forty-nine".