395391069 has 12 divisors (see below), whose sum is σ = 576361500. Its totient is φ = 261175104.

The previous prime is 395391067. The next prime is 395391071. The reversal of 395391069 is 960193593.

395391069 is a `hidden beast` number, since 3 + 9 + 539 + 106 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (395391067) and next prime (395391071).

It can be written as a sum of positive squares in 2 ways, for example, as 125216100 + 270174969 = 11190^2 + 16437^2 .

It is not a de Polignac number, because 395391069 - 2¹ = 395391067 is a prime.

It is a super-2 number, since 2×395391069² = 312668194889925522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395391067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200544 + ... + 202505.

It is an arithmetic number, because the mean of its divisors is an integer number (48030125).

Almost surely, 2^395391069 is an apocalyptic number.

It is an amenable number.

395391069 is a deficient number, since it is larger than the sum of its proper divisors (180970431).

395391069 is a wasteful number, since it uses less digits than its factorization.

395391069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403164 (or 403161 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 45.

The square root of 395391069 is about 19884.4428888516. The cubic root of 395391069 is about 733.9654527417.

The spelling of 395391069 in words is "three hundred ninety-five million, three hundred ninety-one thousand, sixty-nine".