3961439499 has 16 divisors (see below), whose sum is σ = 5333626880. Its totient is φ = 2615185440.

The previous prime is 3961439497. The next prime is 3961439507. The reversal of 3961439499 is 9949341693.

3961439499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3961439499 - 2¹ = 3961439497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3961439497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196512 + ... + 215730.

It is an arithmetic number, because the mean of its divisors is an integer number (333351680).

Almost surely, 2^3961439499 is an apocalyptic number.

3961439499 is a deficient number, since it is larger than the sum of its proper divisors (1372187381).

3961439499 is a wasteful number, since it uses less digits than its factorization.

3961439499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19890.

The product of its digits is 5668704, while the sum is 57.

The square root of 3961439499 is about 62939.9674213452. The cubic root of 3961439499 is about 1582.2836574744.

The spelling of 3961439499 in words is "three billion, nine hundred sixty-one million, four hundred thirty-nine thousand, four hundred ninety-nine".