169369129 has 2 divisors, whose sum is σ = 169369130. Its totient is φ = 169369128.

The previous prime is 169369103. The next prime is 169369133. The reversal of 169369129 is 921963961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124277904 + 45091225 = 11148^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 169369129 - 2¹⁵ = 169336361 is a prime.

It is not a weakly prime, because it can be changed into another prime (169369159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84684564 + 84684565.

It is an arithmetic number, because the mean of its divisors is an integer number (84684565).

Almost surely, 2^169369129 is an apocalyptic number.

It is an amenable number.

169369129 is a deficient number, since it is larger than the sum of its proper divisors (1).

169369129 is an equidigital number, since it uses as much as digits as its factorization.

169369129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 46.

The square root of 169369129 is about 13014.1895252835. The cubic root of 169369129 is about 553.2797194469.

It can be divided in two parts, 1693691 and 29, that added together give a triangular number (1693720 = T₁₈₄₀).

The spelling of 169369129 in words is "one hundred sixty-nine million, three hundred sixty-nine thousand, one hundred twenty-nine".