3857873 has 2 divisors, whose sum is σ = 3857874. Its totient is φ = 3857872.

The previous prime is 3857869. The next prime is 3857891. The reversal of 3857873 is 3787583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3489424 + 368449 = 1868^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 3857873 - 2² = 3857869 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3857873.

It is not a weakly prime, because it can be changed into another prime (3857803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928936 + 1928937.

It is an arithmetic number, because the mean of its divisors is an integer number (1928937).

Almost surely, 2^3857873 is an apocalyptic number.

It is an amenable number.

3857873 is a deficient number, since it is larger than the sum of its proper divisors (1).

3857873 is an equidigital number, since it uses as much as digits as its factorization.

3857873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 3857873 is about 1964.1468886007. The cubic root of 3857873 is about 156.8372825626.

Adding to 3857873 its product of digits (141120), we get a palindrome (3998993).

The spelling of 3857873 in words is "three million, eight hundred fifty-seven thousand, eight hundred seventy-three".