405730169 has 8 divisors (see below), whose sum is σ = 437123400. Its totient is φ = 374363136.

The previous prime is 405730163. The next prime is 405730183. The reversal of 405730169 is 961037504.

It can be written as a sum of positive squares in 4 ways, for example, as 99900025 + 305830144 = 9995^2 + 17488^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405730169 is a prime.

It is a super-2 number, since 2×405730169² = 329233940073537122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405730163) 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, 35807 + ... + 45755.

It is an arithmetic number, because the mean of its divisors is an integer number (54640425).

Almost surely, 2^405730169 is an apocalyptic number.

It is an amenable number.

405730169 is a deficient number, since it is larger than the sum of its proper divisors (31393231).

405730169 is a wasteful number, since it uses less digits than its factorization.

405730169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13099.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 405730169 is about 20142.7448228885. The cubic root of 405730169 is about 740.3079853863.

The spelling of 405730169 in words is "four hundred five million, seven hundred thirty thousand, one hundred sixty-nine".