3985879 has 2 divisors, whose sum is σ = 3985880. Its totient is φ = 3985878.

The previous prime is 3985867. The next prime is 3985889. The reversal of 3985879 is 9785893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3985879 - 2²¹ = 1888727 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992939 + 1992940.

It is an arithmetic number, because the mean of its divisors is an integer number (1992940).

Almost surely, 2^3985879 is an apocalyptic number.

3985879 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985879 is an equidigital number, since it uses as much as digits as its factorization.

3985879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 3985879 is about 1996.4666288220. The cubic root of 3985879 is about 158.5530875320.

The spelling of 3985879 in words is "three million, nine hundred eighty-five thousand, eight hundred seventy-nine".