4218899 has 2 divisors, whose sum is σ = 4218900. Its totient is φ = 4218898.

The previous prime is 4218869. The next prime is 4218901. The reversal of 4218899 is 9988124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4218899 is a prime.

Together with 4218901, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 4⁷ + 2²² + 1 + 8⁴ + 8⁴ + 9 + 9 .

It is not a weakly prime, because it can be changed into another prime (4218829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2109449 + 2109450.

It is an arithmetic number, because the mean of its divisors is an integer number (2109450).

Almost surely, 2^4218899 is an apocalyptic number.

4218899 is a deficient number, since it is larger than the sum of its proper divisors (1).

4218899 is an equidigital number, since it uses as much as digits as its factorization.

4218899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 4218899 is about 2053.9958617290. The cubic root of 4218899 is about 161.5845040160.

The spelling of 4218899 in words is "four million, two hundred eighteen thousand, eight hundred ninety-nine".