169429129 has 4 divisors (see below), whose sum is σ = 171074176. Its totient is φ = 167784084.

The previous prime is 169429121. The next prime is 169429151. The reversal of 169429129 is 921924961.

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.

It is a cyclic number.

It is not a de Polignac number, because 169429129 - 2³ = 169429121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169429121) 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, 822369 + ... + 822574.

It is an arithmetic number, because the mean of its divisors is an integer number (42768544).

Almost surely, 2^169429129 is an apocalyptic number.

It is an amenable number.

169429129 is a deficient number, since it is larger than the sum of its proper divisors (1645047).

169429129 is a wasteful number, since it uses less digits than its factorization.

169429129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645046.

The product of its digits is 69984, while the sum is 43.

The square root of 169429129 is about 13016.4944973676. The cubic root of 169429129 is about 553.3450459207.

The spelling of 169429129 in words is "one hundred sixty-nine million, four hundred twenty-nine thousand, one hundred twenty-nine".