917222 has 4 divisors (see below), whose sum is σ = 1375836. Its totient is φ = 458610.

The previous prime is 917219. The next prime is 917227. The reversal of 917222 is 222719.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222719 = 7 ⋅31817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229304 + ... + 229307.

It is an arithmetic number, because the mean of its divisors is an integer number (343959).

2⁹¹⁷²²² is an apocalyptic number.

917222 is a deficient number, since it is larger than the sum of its proper divisors (458614).

917222 is a wasteful number, since it uses less digits than its factorization.

917222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458613.

The product of its digits is 504, while the sum is 23.

The square root of 917222 is about 957.7170772206. The cubic root of 917222 is about 97.1608907450.

The spelling of 917222 in words is "nine hundred seventeen thousand, two hundred twenty-two".