3959873 has 2 divisors, whose sum is σ = 3959874. Its totient is φ = 3959872.

The previous prime is 3959869. The next prime is 3959899. The reversal of 3959873 is 3789593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3659569 + 300304 = 1913^2 + 548^2 .

It is an emirp because it is prime and its reverse (3789593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3959873 - 2² = 3959869 is a prime.

It is a super-2 number, since 2×3959873² = 31361188352258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3959803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979936 + 1979937.

It is an arithmetic number, because the mean of its divisors is an integer number (1979937).

Almost surely, 2^3959873 is an apocalyptic number.

It is an amenable number.

3959873 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959873 is an equidigital number, since it uses as much as digits as its factorization.

3959873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 3959873 is about 1989.9429640068. The cubic root of 3959873 is about 158.2075065576.

The spelling of 3959873 in words is "three million, nine hundred fifty-nine thousand, eight hundred seventy-three".