230455789 has 2 divisors, whose sum is σ = 230455790. Its totient is φ = 230455788.

The previous prime is 230455787. The next prime is 230455831. The reversal of 230455789 is 987554032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228523689 + 1932100 = 15117^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 230455789 - 2¹ = 230455787 is a prime.

It is a super-2 number, since 2×230455789² = 106219741367225042, which contains 22 as substring.

Together with 230455787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230455787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115227894 + 115227895.

It is an arithmetic number, because the mean of its divisors is an integer number (115227895).

Almost surely, 2^230455789 is an apocalyptic number.

It is an amenable number.

230455789 is a deficient number, since it is larger than the sum of its proper divisors (1).

230455789 is an equidigital number, since it uses as much as digits as its factorization.

230455789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 230455789 is about 15180.7703691216. The cubic root of 230455789 is about 613.0970229829.

The spelling of 230455789 in words is "two hundred thirty million, four hundred fifty-five thousand, seven hundred eighty-nine".