8913218 has 4 divisors (see below), whose sum is σ = 13369830. Its totient is φ = 4456608.

The previous prime is 8913199. The next prime is 8913239. The reversal of 8913218 is 8123198.

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

It can be written as a sum of positive squares in only one way, i.e., 8427409 + 485809 = 2903^2 + 697^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2228303 + ... + 2228306.

Almost surely, 2^8913218 is an apocalyptic number.

8913218 is a deficient number, since it is larger than the sum of its proper divisors (4456612).

8913218 is a wasteful number, since it uses less digits than its factorization.

8913218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456611.

The product of its digits is 3456, while the sum is 32.

The square root of 8913218 is about 2985.5012979398. The cubic root of 8913218 is about 207.3376520803.

The spelling of 8913218 in words is "eight million, nine hundred thirteen thousand, two hundred eighteen".