201328889 has 2 divisors, whose sum is σ = 201328890. Its totient is φ = 201328888.

The previous prime is 201328879. The next prime is 201328937. The reversal of 201328889 is 988823102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174372025 + 26956864 = 13205^2 + 5192^2 .

It is a cyclic number.

It is not a de Polignac number, because 201328889 - 2⁴ = 201328873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201328879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100664444 + 100664445.

It is an arithmetic number, because the mean of its divisors is an integer number (100664445).

Almost surely, 2^201328889 is an apocalyptic number.

It is an amenable number.

201328889 is a deficient number, since it is larger than the sum of its proper divisors (1).

201328889 is an equidigital number, since it uses as much as digits as its factorization.

201328889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 201328889 is about 14189.0411585843. The cubic root of 201328889 is about 586.0959211561.

The spelling of 201328889 in words is "two hundred one million, three hundred twenty-eight thousand, eight hundred eighty-nine".