3939959 has 2 divisors, whose sum is σ = 3939960. Its totient is φ = 3939958.

The previous prime is 3939953. The next prime is 3939989. The reversal of 3939959 is 9599393.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9599393) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3939959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3939953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969979 + 1969980.

It is an arithmetic number, because the mean of its divisors is an integer number (1969980).

Almost surely, 2^3939959 is an apocalyptic number.

3939959 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939959 is an equidigital number, since it uses as much as digits as its factorization.

3939959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 295245, while the sum is 47.

The square root of 3939959 is about 1984.9329963503. The cubic root of 3939959 is about 157.9418549067.

The spelling of 3939959 in words is "three million, nine hundred thirty-nine thousand, nine hundred fifty-nine".