2287421999 has 2 divisors, whose sum is σ = 2287422000. Its totient is φ = 2287421998.

The previous prime is 2287421977. The next prime is 2287422001. The reversal of 2287421999 is 9991247822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2287421999 is a prime.

Together with 2287422001, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2287421999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2287421399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143710999 + 1143711000.

It is an arithmetic number, because the mean of its divisors is an integer number (1143711000).

Almost surely, 2^2287421999 is an apocalyptic number.

2287421999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287421999 is an equidigital number, since it uses as much as digits as its factorization.

2287421999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The square root of 2287421999 is about 47827.0007318042. Note that the first 3 decimals coincide. The cubic root of 2287421999 is about 1317.5954846560.

The spelling of 2287421999 in words is "two billion, two hundred eighty-seven million, four hundred twenty-one thousand, nine hundred ninety-nine".