4991222 has 8 divisors (see below), whose sum is σ = 7628256. Its totient is φ = 2448472.

The previous prime is 4991201. The next prime is 4991237. The reversal of 4991222 is 2221994.

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

It is an Ulam number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 23438 + ... + 23649.

It is an arithmetic number, because the mean of its divisors is an integer number (953532).

Almost surely, 2^4991222 is an apocalyptic number.

4991222 is a deficient number, since it is larger than the sum of its proper divisors (2637034).

4991222 is a wasteful number, since it uses less digits than its factorization.

4991222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47142.

The product of its digits is 2592, while the sum is 29.

The square root of 4991222 is about 2234.1042947902. The cubic root of 4991222 is about 170.8974682584.

The spelling of 4991222 in words is "four million, nine hundred ninety-one thousand, two hundred twenty-two".