129963448 has 8 divisors (see below), whose sum is σ = 243681480. Its totient is φ = 64981720.

The previous prime is 129963437. The next prime is 129963503. The reversal of 129963448 is 844369921.

129963448 is nontrivially palindromic in base 3.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 129963398 and 129963407.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8122708 + ... + 8122723.

It is an arithmetic number, because the mean of its divisors is an integer number (30460185).

Almost surely, 2^129963448 is an apocalyptic number.

It is an amenable number.

129963448 is a deficient number, since it is larger than the sum of its proper divisors (113718032).

129963448 is a wasteful number, since it uses less digits than its factorization.

129963448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245437 (or 16245433 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 129963448 is about 11400.1512270671. The cubic root of 129963448 is about 506.5322192512.

The spelling of 129963448 in words is "one hundred twenty-nine million, nine hundred sixty-three thousand, four hundred forty-eight".