199741489 has 2 divisors, whose sum is σ = 199741490. Its totient is φ = 199741488.

The previous prime is 199741481. The next prime is 199741513. The reversal of 199741489 is 984147991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100400400 + 99341089 = 10020^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 199741489 - 2³ = 199741481 is a prime.

It is not a weakly prime, because it can be changed into another prime (199741481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99870744 + 99870745.

It is an arithmetic number, because the mean of its divisors is an integer number (99870745).

Almost surely, 2^199741489 is an apocalyptic number.

It is an amenable number.

199741489 is a deficient number, since it is larger than the sum of its proper divisors (1).

199741489 is an equidigital number, since it uses as much as digits as its factorization.

199741489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 52.

The square root of 199741489 is about 14132.9929243597. The cubic root of 199741489 is about 584.5514754224.

The spelling of 199741489 in words is "one hundred ninety-nine million, seven hundred forty-one thousand, four hundred eighty-nine".