2089775921 has 2 divisors, whose sum is σ = 2089775922. Its totient is φ = 2089775920.

The previous prime is 2089775903. The next prime is 2089775959. The reversal of 2089775921 is 1295779802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2066975296 + 22800625 = 45464^2 + 4775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2089775921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2089775921.

It is not a weakly prime, because it can be changed into another prime (2089775521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044887960 + 1044887961.

It is an arithmetic number, because the mean of its divisors is an integer number (1044887961).

Almost surely, 2^2089775921 is an apocalyptic number.

It is an amenable number.

2089775921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089775921 is an equidigital number, since it uses as much as digits as its factorization.

2089775921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 2089775921 is about 45714.0669925571. The cubic root of 2089775921 is about 1278.4975700635.

The spelling of 2089775921 in words is "two billion, eighty-nine million, seven hundred seventy-five thousand, nine hundred twenty-one".