3847397 has 2 divisors, whose sum is σ = 3847398. Its totient is φ = 3847396.

The previous prime is 3847357. The next prime is 3847409. The reversal of 3847397 is 7937483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3682561 + 164836 = 1919^2 + 406^2 .

It is an emirp because it is prime and its reverse (7937483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3847397 - 2¹⁰ = 3846373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3847357) 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 as a sum of consecutive naturals, namely, 1923698 + 1923699.

It is an arithmetic number, because the mean of its divisors is an integer number (1923699).

Almost surely, 2^3847397 is an apocalyptic number.

It is an amenable number.

3847397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3847397 is an equidigital number, since it uses as much as digits as its factorization.

3847397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 41.

The square root of 3847397 is about 1961.4782690614. The cubic root of 3847397 is about 156.6951907221.

The spelling of 3847397 in words is "three million, eight hundred forty-seven thousand, three hundred ninety-seven".