409213 has 8 divisors (see below), whose sum is σ = 476928. Its totient is φ = 343824.

The previous prime is 409187. The next prime is 409217. The reversal of 409213 is 312904.

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 409213 - 2⁹ = 408701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 922.

It is an arithmetic number, because the mean of its divisors is an integer number (59616).

2⁴⁰⁹²¹³ is an apocalyptic number.

It is an amenable number.

409213 is a deficient number, since it is larger than the sum of its proper divisors (67715).

409213 is a wasteful number, since it uses less digits than its factorization.

409213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 409213 is about 639.6975848008. The cubic root of 409213 is about 74.2420247115.

The spelling of 409213 in words is "four hundred nine thousand, two hundred thirteen".