409172 has 6 divisors (see below), whose sum is σ = 716058. Its totient is φ = 204584.

The previous prime is 409163. The next prime is 409177. The reversal of 409172 is 271904.

It can be written as a sum of positive squares in only one way, i.e., 276676 + 132496 = 526^2 + 364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51143 + ... + 51150.

It is an arithmetic number, because the mean of its divisors is an integer number (119343).

2⁴⁰⁹¹⁷² is an apocalyptic number.

It is an amenable number.

409172 is a deficient number, since it is larger than the sum of its proper divisors (306886).

409172 is a wasteful number, since it uses less digits than its factorization.

409172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102297 (or 102295 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 409172 is about 639.6655376054. The cubic root of 409172 is about 74.2395451351.

The spelling of 409172 in words is "four hundred nine thousand, one hundred seventy-two".