129089444 has 24 divisors (see below), whose sum is σ = 246734208. Its totient is φ = 58607840.

The previous prime is 129089407. The next prime is 129089459. The reversal of 129089444 is 444980921.

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 in 7 ways as a sum of consecutive naturals, for example, 64442 + ... + 66414.

It is an arithmetic number, because the mean of its divisors is an integer number (10280592).

Almost surely, 2^129089444 is an apocalyptic number.

It is an amenable number.

129089444 is a deficient number, since it is larger than the sum of its proper divisors (117644764).

129089444 is a wasteful number, since it uses less digits than its factorization.

129089444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 129089444 is about 11361.7535618407. The cubic root of 129089444 is about 505.3941881926.

The spelling of 129089444 in words is "one hundred twenty-nine million, eighty-nine thousand, four hundred forty-four".