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226939 = 229991

226939 has 4 divisors (see below), whose sum is σ = 228160. Its totient is φ = 225720.

The previous prime is 226937. The next prime is 226943. The reversal of 226939 is 939622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 939622 = 2469811.

It is a cyclic number.

It is not a de Polignac number, because 226939 - 21 = 226937 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 226939.

It is not an unprimeable number, because it can be changed into a prime (226937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267 + ... + 724.

It is an arithmetic number, because the mean of its divisors is an integer number (57040).

2226939 is an apocalyptic number.

226939 is a deficient number, since it is larger than the sum of its proper divisors (1221).

226939 is an equidigital number, since it uses as much as digits as its factorization.

226939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220.

The product of its digits is 5832, while the sum is 31.

The square root of 226939 is about 476.3811499209. The cubic root of 226939 is about 60.9962373385.

The spelling of 226939 in words is "two hundred twenty-six thousand, nine hundred thirty-nine".

Divisors: 1 229 991 226939