230129989 has 2 divisors, whose sum is σ = 230129990. Its totient is φ = 230129988.

The previous prime is 230129959. The next prime is 230130013. The reversal of 230129989 is 989921032.

230129989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230128900 + 1089 = 15170^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 230129989 - 2²¹ = 228032837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230129909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115064994 + 115064995.

It is an arithmetic number, because the mean of its divisors is an integer number (115064995).

Almost surely, 2^230129989 is an apocalyptic number.

It is an amenable number.

230129989 is a deficient number, since it is larger than the sum of its proper divisors (1).

230129989 is an equidigital number, since it uses as much as digits as its factorization.

230129989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 230129989 is about 15170.0358931678. The cubic root of 230129989 is about 612.8079708488.

The spelling of 230129989 in words is "two hundred thirty million, one hundred twenty-nine thousand, nine hundred eighty-nine".