129099089 has 8 divisors (see below), whose sum is σ = 148131648. Its totient is φ = 110214000.

The previous prime is 129099077. The next prime is 129099101. The reversal of 129099089 is 980990921.

It is an interprime number because it is at equal distance from previous prime (129099077) and next prime (129099101).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129099089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129099049) 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, 34982 + ... + 38495.

It is an arithmetic number, because the mean of its divisors is an integer number (18516456).

Almost surely, 2^129099089 is an apocalyptic number.

It is an amenable number.

129099089 is a deficient number, since it is larger than the sum of its proper divisors (19032559).

129099089 is an equidigital number, since it uses as much as digits as its factorization.

129099089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73735.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 129099089 is about 11362.1780042384. The cubic root of 129099089 is about 505.4067748287.

The spelling of 129099089 in words is "one hundred twenty-nine million, ninety-nine thousand, eighty-nine".