229779 has 18 divisors (see below), whose sum is σ = 366548. Its totient is φ = 138600.

The previous prime is 229777. The next prime is 229781. The reversal of 229779 is 977922.

It is an interprime number because it is at equal distance from previous prime (229777) and next prime (229781).

It is not a de Polignac number, because 229779 - 2¹ = 229777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229771) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 984 + ... + 1194.

2²²⁹⁷⁷⁹ is an apocalyptic number.

229779 is a deficient number, since it is larger than the sum of its proper divisors (136769).

229779 is a wasteful number, since it uses less digits than its factorization.

229779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 225 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 229779 is about 479.3526885290. The cubic root of 229779 is about 61.2496265422.

It can be divided in two parts, 22 and 9779, that added together give a square (9801 = 99²).

The spelling of 229779 in words is "two hundred twenty-nine thousand, seven hundred seventy-nine".