3899991073 has 32 divisors (see below), whose sum is σ = 4385601792. Its totient is φ = 3438624000.

The previous prime is 3899991071. The next prime is 3899991077. The reversal of 3899991073 is 3701999983.

It is a cyclic number.

It is not a de Polignac number, because 3899991073 - 2¹ = 3899991071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3899990999 and 3899991017.

It is not an unprimeable number, because it can be changed into a prime (3899991071) 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 in 31 ways as a sum of consecutive naturals, for example, 19796811 + ... + 19797007.

It is an arithmetic number, because the mean of its divisors is an integer number (137050056).

Almost surely, 2^3899991073 is an apocalyptic number.

It is an amenable number.

3899991073 is a deficient number, since it is larger than the sum of its proper divisors (485610719).

3899991073 is a wasteful number, since it uses less digits than its factorization.

3899991073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 3306744, while the sum is 58.

The square root of 3899991073 is about 62449.9085107416. The cubic root of 3899991073 is about 1574.0597156355.

It can be divided in two parts, 38999910 and 73, that added together give a palindrome (38999983).

The spelling of 3899991073 in words is "three billion, eight hundred ninety-nine million, nine hundred ninety-one thousand, seventy-three".