395694973 has 2 divisors, whose sum is σ = 395694974. Its totient is φ = 395694972.

The previous prime is 395694919. The next prime is 395695019. The reversal of 395694973 is 379496593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351112644 + 44582329 = 18738^2 + 6677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395694973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395694773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197847486 + 197847487.

It is an arithmetic number, because the mean of its divisors is an integer number (197847487).

Almost surely, 2^395694973 is an apocalyptic number.

It is an amenable number.

395694973 is a deficient number, since it is larger than the sum of its proper divisors (1).

395694973 is an equidigital number, since it uses as much as digits as its factorization.

395694973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 55.

The square root of 395694973 is about 19892.0831739665. The cubic root of 395694973 is about 734.1534505081.

The spelling of 395694973 in words is "three hundred ninety-five million, six hundred ninety-four thousand, nine hundred seventy-three".