224209999 has 4 divisors (see below), whose sum is σ = 241456936. Its totient is φ = 206963064.

The previous prime is 224209987. The next prime is 224210009. The reversal of 224209999 is 999902422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 224209999 - 2¹³ = 224201807 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 (224209399) 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, 8623449 + ... + 8623474.

It is an arithmetic number, because the mean of its divisors is an integer number (60364234).

Almost surely, 2^224209999 is an apocalyptic number.

224209999 is a deficient number, since it is larger than the sum of its proper divisors (17246937).

224209999 is a wasteful number, since it uses less digits than its factorization.

224209999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17246936.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 224209999 is about 14973.6434777912. The cubic root of 224209999 is about 607.5075210052.

The spelling of 224209999 in words is "two hundred twenty-four million, two hundred nine thousand, nine hundred ninety-nine".