409169 has 8 divisors (see below), whose sum is σ = 430848. Its totient is φ = 388080.

The previous prime is 409163. The next prime is 409177. The reversal of 409169 is 961904.

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

It is a cyclic number.

It is not a de Polignac number, because 409169 - 2⁴ = 409153 is a prime.

It is a super-2 number, since 2×409169² = 334838541122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (409163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (53856).

2⁴⁰⁹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

409169 is a deficient number, since it is larger than the sum of its proper divisors (21679).

409169 is a wasteful number, since it uses less digits than its factorization.

409169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 409169 is about 639.6631926256. The cubic root of 409169 is about 74.2393636961.

The spelling of 409169 in words is "four hundred nine thousand, one hundred sixty-nine".