394025697 has 36 divisors (see below), whose sum is σ = 637619580. Its totient is φ = 234089856.

The previous prime is 394025669. The next prime is 394025701. The reversal of 394025697 is 796520493.

It is a happy number.

394025697 is a `hidden beast` number, since 394 + 0 + 256 + 9 + 7 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 92621376 + 301404321 = 9624^2 + 17361^2 .

It is not a de Polignac number, because 394025697 - 2¹⁴ = 394009313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394025197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39643 + ... + 48575.

It is an arithmetic number, because the mean of its divisors is an integer number (17711655).

Almost surely, 2^394025697 is an apocalyptic number.

It is an amenable number.

394025697 is a deficient number, since it is larger than the sum of its proper divisors (243593883).

394025697 is a wasteful number, since it uses less digits than its factorization.

394025697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8994 (or 8978 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 394025697 is about 19850.0805288039. The cubic root of 394025697 is about 733.1196305448.

The spelling of 394025697 in words is "three hundred ninety-four million, twenty-five thousand, six hundred ninety-seven".