999298222 has 32 divisors (see below), whose sum is σ = 1645912800. Its totient is φ = 452210688.

The previous prime is 999298213. The next prime is 999298229. The reversal of 999298222 is 222892999.

It is a happy number.

It is a super-2 number, since 2×999298222² = 1997193872984722568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 999298222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999298229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884554 + ... + 885682.

It is an arithmetic number, because the mean of its divisors is an integer number (51434775).

Almost surely, 2^999298222 is an apocalyptic number.

999298222 is a deficient number, since it is larger than the sum of its proper divisors (646614578).

999298222 is a wasteful number, since it uses less digits than its factorization.

999298222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its digits is 839808, while the sum is 52.

The square root of 999298222 is about 31611.6785697944. The cubic root of 999298222 is about 999.7660192573.

The spelling of 999298222 in words is "nine hundred ninety-nine million, two hundred ninety-eight thousand, two hundred twenty-two".