129388344 has 16 divisors (see below), whose sum is σ = 323470920. Its totient is φ = 43129440.

The previous prime is 129388283. The next prime is 129388349. The reversal of 129388344 is 443883921.

It is a junction number, because it is equal to n+sod(n) for n = 129388296 and 129388305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129388349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695567 + ... + 2695614.

Almost surely, 2^129388344 is an apocalyptic number.

It is an amenable number.

129388344 is an abundant number, since it is smaller than the sum of its proper divisors (194082576).

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

129388344 is a wasteful number, since it uses less digits than its factorization.

129388344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5391190 (or 5391186 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 129388344 is about 11374.8997358219. The cubic root of 129388344 is about 505.7839589737.

The spelling of 129388344 in words is "one hundred twenty-nine million, three hundred eighty-eight thousand, three hundred forty-four".