395825109 has 4 divisors (see below), whose sum is σ = 527766816. Its totient is φ = 263883404.

The previous prime is 395825083. The next prime is 395825113. The reversal of 395825109 is 901528593.

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 395825109 - 2¹⁹ = 395300821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395825179) 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, 65970849 + ... + 65970854.

It is an arithmetic number, because the mean of its divisors is an integer number (131941704).

Almost surely, 2^395825109 is an apocalyptic number.

It is an amenable number.

395825109 is a deficient number, since it is larger than the sum of its proper divisors (131941707).

395825109 is a wasteful number, since it uses less digits than its factorization.

395825109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131941706.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 395825109 is about 19895.3539551323. The cubic root of 395825109 is about 734.2339243816.

The spelling of 395825109 in words is "three hundred ninety-five million, eight hundred twenty-five thousand, one hundred nine".