129854444 has 24 divisors (see below), whose sum is σ = 231110880. Its totient is φ = 63828864.

The previous prime is 129854441. The next prime is 129854477. The reversal of 129854444 is 444458921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129854441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127682 + ... + 128694.

It is an arithmetic number, because the mean of its divisors is an integer number (9629620).

Almost surely, 2^129854444 is an apocalyptic number.

It is an amenable number.

129854444 is a deficient number, since it is larger than the sum of its proper divisors (101256436).

129854444 is a wasteful number, since it uses less digits than its factorization.

129854444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1527 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 129854444 is about 11395.3694104228. The cubic root of 129854444 is about 506.3905653667.

The spelling of 129854444 in words is "one hundred twenty-nine million, eight hundred fifty-four thousand, four hundred forty-four".