129659244 has 72 divisors (see below), whose sum is σ = 358174320. Its totient is φ = 36263040.

The previous prime is 129659237. The next prime is 129659269. The reversal of 129659244 is 442956921.

It is a junction number, because it is equal to n+sod(n) for n = 129659196 and 129659205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15442 + ... + 22310.

Almost surely, 2^129659244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129659244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179087160).

129659244 is an abundant number, since it is smaller than the sum of its proper divisors (228515076).

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

129659244 is a wasteful number, since it uses less digits than its factorization.

129659244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911 (or 6898 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 129659244 is about 11386.8013067762. The cubic root of 129659244 is about 506.1366990464.

The spelling of 129659244 in words is "one hundred twenty-nine million, six hundred fifty-nine thousand, two hundred forty-four".