229376989 has 2 divisors, whose sum is σ = 229376990. Its totient is φ = 229376988.

The previous prime is 229376933. The next prime is 229377013. The reversal of 229376989 is 989673922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226261764 + 3115225 = 15042^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 229376989 - 2¹⁵ = 229344221 is a prime.

It is a super-2 number, since 2×229376989² = 105227606165412242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229376909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114688494 + 114688495.

It is an arithmetic number, because the mean of its divisors is an integer number (114688495).

Almost surely, 2^229376989 is an apocalyptic number.

It is an amenable number.

229376989 is a deficient number, since it is larger than the sum of its proper divisors (1).

229376989 is an equidigital number, since it uses as much as digits as its factorization.

229376989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 229376989 is about 15145.1968953857. The cubic root of 229376989 is about 612.1388582706.

The spelling of 229376989 in words is "two hundred twenty-nine million, three hundred seventy-six thousand, nine hundred eighty-nine".