4021889617 has 2 divisors, whose sum is σ = 4021889618. Its totient is φ = 4021889616.

The previous prime is 4021889609. The next prime is 4021889647. The reversal of 4021889617 is 7169881204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2236911616 + 1784978001 = 47296^2 + 42249^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021889617 - 2³ = 4021889609 is a prime.

It is not a weakly prime, because it can be changed into another prime (4021889647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010944808 + 2010944809.

It is an arithmetic number, because the mean of its divisors is an integer number (2010944809).

Almost surely, 2^4021889617 is an apocalyptic number.

It is an amenable number.

4021889617 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021889617 is an equidigital number, since it uses as much as digits as its factorization.

4021889617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 4021889617 is about 63418.3697125683. The cubic root of 4021889617 is about 1590.2914193639.

The spelling of 4021889617 in words is "four billion, twenty-one million, eight hundred eighty-nine thousand, six hundred seventeen".