129493441 has 16 divisors (see below), whose sum is σ = 162396288. Its totient is φ = 100310400.

The previous prime is 129493409. The next prime is 129493453. The reversal of 129493441 is 144394921.

It is a cyclic number.

It is not a de Polignac number, because 129493441 - 2⁵ = 129493409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129493441.

It is not an unprimeable number, because it can be changed into a prime (129493241) 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 15 ways as a sum of consecutive naturals, for example, 8461 + ... + 18181.

It is an arithmetic number, because the mean of its divisors is an integer number (10149768).

Almost surely, 2^129493441 is an apocalyptic number.

129493441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129493441 is a deficient number, since it is larger than the sum of its proper divisors (32902847).

129493441 is a wasteful number, since it uses less digits than its factorization.

129493441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9912.

The product of its digits is 31104, while the sum is 37.

The square root of 129493441 is about 11379.5184871769. The cubic root of 129493441 is about 505.9208646364.

The spelling of 129493441 in words is "one hundred twenty-nine million, four hundred ninety-three thousand, four hundred forty-one".