226890809 has 8 divisors (see below), whose sum is σ = 235200000. Its totient is φ = 218614032.

The previous prime is 226890787. The next prime is 226890817. The reversal of 226890809 is 908098622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 226890809 - 2¹² = 226886713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 226890809.

It is not an unprimeable number, because it can be changed into a prime (226893809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6632 + ... + 22310.

It is an arithmetic number, because the mean of its divisors is an integer number (29400000).

Almost surely, 2^226890809 is an apocalyptic number.

226890809 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

226890809 is a deficient number, since it is larger than the sum of its proper divisors (8309191).

226890809 is a wasteful number, since it uses less digits than its factorization.

226890809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16207.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 226890809 is about 15062.8951068511. The cubic root of 226890809 is about 609.9191947071.

The spelling of 226890809 in words is "two hundred twenty-six million, eight hundred ninety thousand, eight hundred nine".