395416221 has 4 divisors (see below), whose sum is σ = 527221632. Its totient is φ = 263610812.

The previous prime is 395416183. The next prime is 395416223. The reversal of 395416221 is 122614593.

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: 122614593 = 3 ⋅40871531.

It is a cyclic number.

It is not a de Polignac number, because 395416221 - 2⁶ = 395416157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395416223) 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, 65902701 + ... + 65902706.

It is an arithmetic number, because the mean of its divisors is an integer number (131805408).

Almost surely, 2^395416221 is an apocalyptic number.

It is an amenable number.

395416221 is a deficient number, since it is larger than the sum of its proper divisors (131805411).

395416221 is a wasteful number, since it uses less digits than its factorization.

395416221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131805410.

The product of its digits is 12960, while the sum is 33.

The square root of 395416221 is about 19885.0753330230. The cubic root of 395416221 is about 733.9810156524.

The spelling of 395416221 in words is "three hundred ninety-five million, four hundred sixteen thousand, two hundred twenty-one".