229165940 has 12 divisors (see below), whose sum is σ = 481248516. Its totient is φ = 91666368.

The previous prime is 229165931. The next prime is 229165943. The reversal of 229165940 is 49561922.

It can be written as a sum of positive squares in 2 ways, for example, as 23931664 + 205234276 = 4892^2 + 14326^2 .

It is a junction number, because it is equal to n+sod(n) for n = 229165894 and 229165903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229165943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5729129 + ... + 5729168.

It is an arithmetic number, because the mean of its divisors is an integer number (40104043).

Almost surely, 2^229165940 is an apocalyptic number.

229165940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229165940 is an abundant number, since it is smaller than the sum of its proper divisors (252082576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229165940 is a wasteful number, since it uses less digits than its factorization.

229165940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11458306 (or 11458304 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 229165940 is about 15138.2277694584. The cubic root of 229165940 is about 611.9510583557.

The spelling of 229165940 in words is "two hundred twenty-nine million, one hundred sixty-five thousand, nine hundred forty".