129491711 has 8 divisors (see below), whose sum is σ = 131129184. Its totient is φ = 127864800.

The previous prime is 129491701. The next prime is 129491723. The reversal of 129491711 is 117194921.

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

It is a cyclic number.

It is not a de Polignac number, because 129491711 - 2¹⁴ = 129475327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129491701) 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, 23645 + ... + 28601.

It is an arithmetic number, because the mean of its divisors is an integer number (16391148).

Almost surely, 2^129491711 is an apocalyptic number.

129491711 is a deficient number, since it is larger than the sum of its proper divisors (1637473).

129491711 is a wasteful number, since it uses less digits than its factorization.

129491711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281.

The product of its digits is 4536, while the sum is 35.

The square root of 129491711 is about 11379.4424731619. The cubic root of 129491711 is about 505.9186116343.

The spelling of 129491711 in words is "one hundred twenty-nine million, four hundred ninety-one thousand, seven hundred eleven".