395215201 has 4 divisors (see below), whose sum is σ = 418463172. Its totient is φ = 371967232.

The previous prime is 395215189. The next prime is 395215243. The reversal of 395215201 is 102512593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137452176 + 257763025 = 11724^2 + 16055^2 .

It is a cyclic number.

It is not a de Polignac number, because 395215201 - 2¹¹ = 395213153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 395215201.

It is not an unprimeable number, because it can be changed into a prime (395215501) 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 3 ways as a sum of consecutive naturals, for example, 11623960 + ... + 11623993.

It is an arithmetic number, because the mean of its divisors is an integer number (104615793).

Almost surely, 2^395215201 is an apocalyptic number.

It is an amenable number.

395215201 is a deficient number, since it is larger than the sum of its proper divisors (23247971).

395215201 is a wasteful number, since it uses less digits than its factorization.

395215201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23247970.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 395215201 is about 19880.0201458650. The cubic root of 395215201 is about 733.8566151972.

Adding to 395215201 its reverse (102512593), we get a palindrome (497727794).

The spelling of 395215201 in words is "three hundred ninety-five million, two hundred fifteen thousand, two hundred one".