229907989 has 2 divisors, whose sum is σ = 229907990. Its totient is φ = 229907988.

The previous prime is 229907959. The next prime is 229908053. The reversal of 229907989 is 989709922.

229907989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181117764 + 48790225 = 13458^2 + 6985^2 .

It is a cyclic number.

It is not a de Polignac number, because 229907989 - 2²³ = 221519381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229907959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114953994 + 114953995.

It is an arithmetic number, because the mean of its divisors is an integer number (114953995).

Almost surely, 2^229907989 is an apocalyptic number.

It is an amenable number.

229907989 is a deficient number, since it is larger than the sum of its proper divisors (1).

229907989 is an equidigital number, since it uses as much as digits as its factorization.

229907989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 229907989 is about 15162.7170718180. The cubic root of 229907989 is about 612.6108545156.

The spelling of 229907989 in words is "two hundred twenty-nine million, nine hundred seven thousand, nine hundred eighty-nine".