201928589 has 2 divisors, whose sum is σ = 201928590. Its totient is φ = 201928588.

The previous prime is 201928577. The next prime is 201928607. The reversal of 201928589 is 985829102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201924100 + 4489 = 14210^2 + 67^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201928589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201928549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100964294 + 100964295.

It is an arithmetic number, because the mean of its divisors is an integer number (100964295).

Almost surely, 2^201928589 is an apocalyptic number.

It is an amenable number.

201928589 is a deficient number, since it is larger than the sum of its proper divisors (1).

201928589 is an equidigital number, since it uses as much as digits as its factorization.

201928589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 201928589 is about 14210.1579512685. The cubic root of 201928589 is about 586.6772805343.

The spelling of 201928589 in words is "two hundred one million, nine hundred twenty-eight thousand, five hundred eighty-nine".