3944549579 has 4 divisors (see below), whose sum is σ = 4080568560. Its totient is φ = 3808530600.

The previous prime is 3944549561. The next prime is 3944549617. The reversal of 3944549579 is 9759454493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3944549579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3944549179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68009447 + ... + 68009504.

It is an arithmetic number, because the mean of its divisors is an integer number (1020142140).

Almost surely, 2^3944549579 is an apocalyptic number.

3944549579 is a deficient number, since it is larger than the sum of its proper divisors (136018981).

3944549579 is a wasteful number, since it uses less digits than its factorization.

3944549579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136018980.

The product of its digits is 24494400, while the sum is 59.

The square root of 3944549579 is about 62805.6492602377. The cubic root of 3944549579 is about 1580.0317222440.

The spelling of 3944549579 in words is "three billion, nine hundred forty-four million, five hundred forty-nine thousand, five hundred seventy-nine".