2229991399 has 2 divisors, whose sum is σ = 2229991400. Its totient is φ = 2229991398.

The previous prime is 2229991397. The next prime is 2229991403. The reversal of 2229991399 is 9931999222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2229991399 - 2¹ = 2229991397 is a prime.

It is a super-2 number, since 2×2229991399² = 9945723279227954402, which contains 22 as substring.

Together with 2229991397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2229991391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114995699 + 1114995700.

It is an arithmetic number, because the mean of its divisors is an integer number (1114995700).

Almost surely, 2^2229991399 is an apocalyptic number.

2229991399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2229991399 is an equidigital number, since it uses as much as digits as its factorization.

2229991399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1417176, while the sum is 55.

The square root of 2229991399 is about 47222.7847442313. The cubic root of 2229991399 is about 1306.4748764984.

The spelling of 2229991399 in words is "two billion, two hundred twenty-nine million, nine hundred ninety-one thousand, three hundred ninety-nine".