129789053 has 4 divisors (see below), whose sum is σ = 129811968. Its totient is φ = 129766140.

The previous prime is 129789031. The next prime is 129789071. The reversal of 129789053 is 350987921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 129789053 - 2⁸ = 129788797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129788995 and 129789013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129789353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908 + ... + 16578.

It is an arithmetic number, because the mean of its divisors is an integer number (32452992).

Almost surely, 2^129789053 is an apocalyptic number.

It is an amenable number.

129789053 is a deficient number, since it is larger than the sum of its proper divisors (22915).

129789053 is a wasteful number, since it uses less digits than its factorization.

129789053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22914.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 129789053 is about 11392.4998573623. The cubic root of 129789053 is about 506.3055498054.

The spelling of 129789053 in words is "one hundred twenty-nine million, seven hundred eighty-nine thousand, fifty-three".