8221903489 has 2 divisors, whose sum is σ = 8221903490. Its totient is φ = 8221903488.

The previous prime is 8221903429. The next prime is 8221903519. The reversal of 8221903489 is 9843091228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6596201089 + 1625702400 = 81217^2 + 40320^2 .

It is a cyclic number.

It is not a de Polignac number, because 8221903489 - 2⁹ = 8221902977 is a prime.

It is not a weakly prime, because it can be changed into another prime (8221903429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110951744 + 4110951745.

It is an arithmetic number, because the mean of its divisors is an integer number (4110951745).

Almost surely, 2^8221903489 is an apocalyptic number.

It is an amenable number.

8221903489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8221903489 is an equidigital number, since it uses as much as digits as its factorization.

8221903489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 8221903489 is about 90674.7125112619. The cubic root of 8221903489 is about 2018.3235681587.

The spelling of 8221903489 in words is "eight billion, two hundred twenty-one million, nine hundred three thousand, four hundred eighty-nine".