229440261 has 4 divisors (see below), whose sum is σ = 305920352. Its totient is φ = 152960172.

The previous prime is 229440259. The next prime is 229440287. The reversal of 229440261 is 162044922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 229440261 - 2¹ = 229440259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229440221) 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, 38240041 + ... + 38240046.

It is an arithmetic number, because the mean of its divisors is an integer number (76480088).

Almost surely, 2^229440261 is an apocalyptic number.

It is an amenable number.

229440261 is a deficient number, since it is larger than the sum of its proper divisors (76480091).

229440261 is an equidigital number, since it uses as much as digits as its factorization.

229440261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76480090.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 229440261 is about 15147.2855984166. The cubic root of 229440261 is about 612.1951378031.

The spelling of 229440261 in words is "two hundred twenty-nine million, four hundred forty thousand, two hundred sixty-one".