3928226641 has 4 divisors (see below), whose sum is σ = 3938325300. Its totient is φ = 3918127984.

The previous prime is 3928226623. The next prime is 3928226657. The reversal of 3928226641 is 1466228293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1466228293 = 59 ⋅24851327.

It can be written as a sum of positive squares in 2 ways, for example, as 1690936641 + 2237290000 = 41121^2 + 47300^2 .

It is a cyclic number.

It is not a de Polignac number, because 3928226641 - 2⁵ = 3928226609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3928221641) 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, 5048746 + ... + 5049523.

It is an arithmetic number, because the mean of its divisors is an integer number (984581325).

Almost surely, 2^3928226641 is an apocalyptic number.

It is an amenable number.

3928226641 is a deficient number, since it is larger than the sum of its proper divisors (10098659).

3928226641 is a wasteful number, since it uses less digits than its factorization.

3928226641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10098658.

The product of its digits is 248832, while the sum is 43.

The square root of 3928226641 is about 62675.5665391227. The cubic root of 3928226641 is about 1577.8492663225.

The spelling of 3928226641 in words is "three billion, nine hundred twenty-eight million, two hundred twenty-six thousand, six hundred forty-one".