129588949 has 16 divisors (see below), whose sum is σ = 158462080. Its totient is φ = 103498560.

The previous prime is 129588947. The next prime is 129588961. The reversal of 129588949 is 949885921.

It is a cyclic number.

It is not a de Polignac number, because 129588949 - 2¹ = 129588947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129588949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129588947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127 + ... + 16099.

It is an arithmetic number, because the mean of its divisors is an integer number (9903880).

Almost surely, 2^129588949 is an apocalyptic number.

129588949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

129588949 is a deficient number, since it is larger than the sum of its proper divisors (28873131).

129588949 is a wasteful number, since it uses less digits than its factorization.

129588949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16060.

The product of its digits is 1866240, while the sum is 55.

The square root of 129588949 is about 11383.7142005586. The cubic root of 129588949 is about 506.0452148611.

The spelling of 129588949 in words is "one hundred twenty-nine million, five hundred eighty-eight thousand, nine hundred forty-nine".