129489932444 has 12 divisors (see below), whose sum is σ = 229337591784. Its totient is φ = 63964906224.

The previous prime is 129489932441. The next prime is 129489932461. The reversal of 129489932444 is 444239984921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129489932441) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 195014627 + ... + 195015290.

It is an arithmetic number, because the mean of its divisors is an integer number (19111465982).

Almost surely, 2^129489932444 is an apocalyptic number.

It is an amenable number.

129489932444 is a deficient number, since it is larger than the sum of its proper divisors (99847659340).

129489932444 is a wasteful number, since it uses less digits than its factorization.

129489932444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390030004 (or 390030002 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 59.

The spelling of 129489932444 in words is "one hundred twenty-nine billion, four hundred eighty-nine million, nine hundred thirty-two thousand, four hundred forty-four".