129091533 has 8 divisors (see below), whose sum is σ = 177674496. Its totient is φ = 83284800.

The previous prime is 129091531. The next prime is 129091549. The reversal of 129091533 is 335190921.

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

It is not a de Polignac number, because 129091533 - 2¹ = 129091531 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129091494 and 129091503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129091531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693948 + ... + 694133.

It is an arithmetic number, because the mean of its divisors is an integer number (22209312).

Almost surely, 2^129091533 is an apocalyptic number.

It is an amenable number.

129091533 is a deficient number, since it is larger than the sum of its proper divisors (48582963).

129091533 is a wasteful number, since it uses less digits than its factorization.

129091533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388115.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 129091533 is about 11361.8454927006. The cubic root of 129091533 is about 505.3969143716.

The spelling of 129091533 in words is "one hundred twenty-nine million, ninety-one thousand, five hundred thirty-three".