3920719989 has 16 divisors (see below), whose sum is σ = 5481979200. Its totient is φ = 2489106816.

The previous prime is 3920719987. The next prime is 3920720033. The reversal of 3920719989 is 9899170293.

It is not a de Polignac number, because 3920719989 - 2¹ = 3920719987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920719987) 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 15 ways as a sum of consecutive naturals, for example, 302319 + ... + 315020.

It is an arithmetic number, because the mean of its divisors is an integer number (342623700).

Almost surely, 2^3920719989 is an apocalyptic number.

It is an amenable number.

3920719989 is a deficient number, since it is larger than the sum of its proper divisors (1561259211).

3920719989 is a wasteful number, since it uses less digits than its factorization.

3920719989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617444.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 3920719989 is about 62615.6529072404. The cubic root of 3920719989 is about 1576.8435607693.

The spelling of 3920719989 in words is "three billion, nine hundred twenty million, seven hundred nineteen thousand, nine hundred eighty-nine".