229918769 has 2 divisors, whose sum is σ = 229918770. Its totient is φ = 229918768.

The previous prime is 229918739. The next prime is 229918789. The reversal of 229918769 is 967819922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168688144 + 61230625 = 12988^2 + 7825^2 .

It is a cyclic number.

It is not a de Polignac number, because 229918769 - 2¹⁶ = 229853233 is a prime.

It is a super-2 number, since 2×229918769² = 105725280676950722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 229918769.

It is not a weakly prime, because it can be changed into another prime (229918709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114959384 + 114959385.

It is an arithmetic number, because the mean of its divisors is an integer number (114959385).

Almost surely, 2^229918769 is an apocalyptic number.

It is an amenable number.

229918769 is a deficient number, since it is larger than the sum of its proper divisors (1).

229918769 is an equidigital number, since it uses as much as digits as its factorization.

229918769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 229918769 is about 15163.0725448373. The cubic root of 229918769 is about 612.6204291311.

The spelling of 229918769 in words is "two hundred twenty-nine million, nine hundred eighteen thousand, seven hundred sixty-nine".