129017444 has 24 divisors (see below), whose sum is σ = 231856128. Its totient is φ = 62788160.

The previous prime is 129017407. The next prime is 129017453. The reversal of 129017444 is 444710921.

It is a self number, because there is not a number n which added to its sum of digits gives 129017444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34112 + ... + 37704.

It is an arithmetic number, because the mean of its divisors is an integer number (9660672).

Almost surely, 2^129017444 is an apocalyptic number.

It is an amenable number.

129017444 is a deficient number, since it is larger than the sum of its proper divisors (102838684).

129017444 is a wasteful number, since it uses less digits than its factorization.

129017444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 129017444 is about 11358.5845949220. The cubic root of 129017444 is about 505.3002090421.

The spelling of 129017444 in words is "one hundred twenty-nine million, seventeen thousand, four hundred forty-four".