395409 has 16 divisors (see below), whose sum is σ = 634880. Its totient is φ = 213840.

The previous prime is 395407. The next prime is 395429. The reversal of 395409 is 904593.

It is not a de Polignac number, because 395409 - 2¹ = 395407 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (395407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97 + ... + 894.

It is an arithmetic number, because the mean of its divisors is an integer number (39680).

2³⁹⁵⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

395409 is a deficient number, since it is larger than the sum of its proper divisors (239471).

395409 is a wasteful number, since it uses less digits than its factorization.

395409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 395409 is about 628.8155532428. The cubic root of 395409 is about 73.3976547694.

The spelling of 395409 in words is "three hundred ninety-five thousand, four hundred nine".