9221418 has 16 divisors (see below), whose sum is σ = 20492160. Its totient is φ = 3073788.

The previous prime is 9221389. The next prime is 9221423. The reversal of 9221418 is 8141229.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9221391 and 9221400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85330 + ... + 85437.

It is an arithmetic number, because the mean of its divisors is an integer number (1280760).

Almost surely, 2^9221418 is an apocalyptic number.

9221418 is an abundant number, since it is smaller than the sum of its proper divisors (11270742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9221418 is a wasteful number, since it uses less digits than its factorization.

9221418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170778 (or 170772 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 9221418 is about 3036.6787778756. The cubic root of 9221418 is about 209.7003890693.

The spelling of 9221418 in words is "nine million, two hundred twenty-one thousand, four hundred eighteen".