3955859 has 2 divisors, whose sum is σ = 3955860. Its totient is φ = 3955858.

The previous prime is 3955823. The next prime is 3955877. The reversal of 3955859 is 9585593.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9585593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3955859 - 2⁸ = 3955603 is a prime.

It is not a weakly prime, because it can be changed into another prime (3955459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977929 + 1977930.

It is an arithmetic number, because the mean of its divisors is an integer number (1977930).

Almost surely, 2^3955859 is an apocalyptic number.

3955859 is a deficient number, since it is larger than the sum of its proper divisors (1).

3955859 is an equidigital number, since it uses as much as digits as its factorization.

3955859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 44.

The square root of 3955859 is about 1988.9341366672. The cubic root of 3955859 is about 158.1540318100.

The spelling of 3955859 in words is "three million, nine hundred fifty-five thousand, eight hundred fifty-nine".