395121 has 4 divisors (see below), whose sum is σ = 526832. Its totient is φ = 263412.

The previous prime is 395119. The next prime is 395137. The reversal of 395121 is 121593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121593 = 3 ⋅40531.

It is not a de Polignac number, because 395121 - 2¹ = 395119 is a prime.

It is a super-2 number, since 2×395121² = 312241209282, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 395121.

It is not an unprimeable number, because it can be changed into a prime (395111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65851 + ... + 65856.

It is an arithmetic number, because the mean of its divisors is an integer number (131708).

2³⁹⁵¹²¹ is an apocalyptic number.

It is an amenable number.

395121 is a deficient number, since it is larger than the sum of its proper divisors (131711).

395121 is a wasteful number, since it uses less digits than its factorization.

395121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131710.

The product of its digits is 270, while the sum is 21.

The square root of 395121 is about 628.5865095593. The cubic root of 395121 is about 73.3798304754.

The spelling of 395121 in words is "three hundred ninety-five thousand, one hundred twenty-one".