395052621 has 4 divisors (see below), whose sum is σ = 526736832. Its totient is φ = 263368412.

The previous prime is 395052607. The next prime is 395052629. The reversal of 395052621 is 126250593.

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.

It is a cyclic number.

It is not a de Polignac number, because 395052621 - 2⁹ = 395052109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395052629) 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, 65842101 + ... + 65842106.

It is an arithmetic number, because the mean of its divisors is an integer number (131684208).

Almost surely, 2^395052621 is an apocalyptic number.

It is an amenable number.

395052621 is a deficient number, since it is larger than the sum of its proper divisors (131684211).

395052621 is a wasteful number, since it uses less digits than its factorization.

395052621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131684210.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 395052621 is about 19875.9306951901. The cubic root of 395052621 is about 733.7559723304.

The spelling of 395052621 in words is "three hundred ninety-five million, fifty-two thousand, six hundred twenty-one".