129444222 has 16 divisors (see below), whose sum is σ = 274117392. Its totient is φ = 40609920.

The previous prime is 129444199. The next prime is 129444229. The reversal of 129444222 is 222444921.

It is a self number, because there is not a number n which added to its sum of digits gives 129444222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129444229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634429 + ... + 634632.

It is an arithmetic number, because the mean of its divisors is an integer number (17132337).

Almost surely, 2^129444222 is an apocalyptic number.

129444222 is an abundant number, since it is smaller than the sum of its proper divisors (144673170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129444222 is a wasteful number, since it uses less digits than its factorization.

129444222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269083.

The product of its digits is 9216, while the sum is 30.

The square root of 129444222 is about 11377.3556681682. The cubic root of 129444222 is about 505.8567582375.

The spelling of 129444222 in words is "one hundred twenty-nine million, four hundred forty-four thousand, two hundred twenty-two".