129116444 has 24 divisors (see below), whose sum is σ = 231787248. Its totient is φ = 62899200.

The previous prime is 129116441. The next prime is 129116447. The reversal of 129116444 is 444611921.

It is an interprime number because it is at equal distance from previous prime (129116441) and next prime (129116447).

It is a super-2 number, since 2×129116444² = 33342112222410272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129116444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129116441) by changing a digit.

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, 98594 + ... + 99894.

It is an arithmetic number, because the mean of its divisors is an integer number (9657802).

Almost surely, 2^129116444 is an apocalyptic number.

It is an amenable number.

129116444 is a deficient number, since it is larger than the sum of its proper divisors (102670804).

129116444 is a wasteful number, since it uses less digits than its factorization.

129116444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1923 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 129116444 is about 11362.9416965854. The cubic root of 129116444 is about 505.4294213648.

The spelling of 129116444 in words is "one hundred twenty-nine million, one hundred sixteen thousand, four hundred forty-four".