2222638999 has 4 divisors (see below), whose sum is σ = 2540158864. Its totient is φ = 1905119136.

The previous prime is 2222638949. The next prime is 2222639021. The reversal of 2222638999 is 9998362222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2222638999 - 2¹³ = 2222630807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222638949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158759922 + ... + 158759935.

It is an arithmetic number, because the mean of its divisors is an integer number (635039716).

Almost surely, 2^2222638999 is an apocalyptic number.

2222638999 is a deficient number, since it is larger than the sum of its proper divisors (317519865).

2222638999 is an equidigital number, since it uses as much as digits as its factorization.

2222638999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317519864.

The product of its digits is 1679616, while the sum is 52.

The square root of 2222638999 is about 47144.8724571400. The cubic root of 2222638999 is about 1305.0374565860.

The spelling of 2222638999 in words is "two billion, two hundred twenty-two million, six hundred thirty-eight thousand, nine hundred ninety-nine".