3959440999 has 2 divisors, whose sum is σ = 3959441000. Its totient is φ = 3959440998.

The previous prime is 3959440967. The next prime is 3959441041. The reversal of 3959440999 is 9990449593.

It is a weak prime.

It is an emirp because it is prime and its reverse (9990449593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3959440999 - 2⁵ = 3959440967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3959441999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979720499 + 1979720500.

It is an arithmetic number, because the mean of its divisors is an integer number (1979720500).

Almost surely, 2^3959440999 is an apocalyptic number.

3959440999 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959440999 is an equidigital number, since it uses as much as digits as its factorization.

3959440999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14171760, while the sum is 61.

The square root of 3959440999 is about 62924.0891789464. The cubic root of 3959440999 is about 1582.0175315032.

The spelling of 3959440999 in words is "three billion, nine hundred fifty-nine million, four hundred forty thousand, nine hundred ninety-nine".