3928085089 has 4 divisors (see below), whose sum is σ = 4002199956. Its totient is φ = 3853970224.

The previous prime is 3928085069. The next prime is 3928085101. The reversal of 3928085089 is 9805808293.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3542630400 + 385454689 = 59520^2 + 19633^2 .

It is a cyclic number.

It is not a de Polignac number, because 3928085089 - 2²⁵ = 3894530657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3928085069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37057354 + ... + 37057459.

It is an arithmetic number, because the mean of its divisors is an integer number (1000549989).

Almost surely, 2^3928085089 is an apocalyptic number.

It is an amenable number.

3928085089 is a deficient number, since it is larger than the sum of its proper divisors (74114867).

3928085089 is an equidigital number, since it uses as much as digits as its factorization.

3928085089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74114866.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 3928085089 is about 62674.4372850686. The cubic root of 3928085089 is about 1577.8303137159.

The spelling of 3928085089 in words is "three billion, nine hundred twenty-eight million, eighty-five thousand, eighty-nine".