220208399 has 2 divisors, whose sum is σ = 220208400. Its totient is φ = 220208398.

The previous prime is 220208393. The next prime is 220208419. The reversal of 220208399 is 993802022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220208399 - 2¹⁶ = 220142863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220208393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110104199 + 110104200.

It is an arithmetic number, because the mean of its divisors is an integer number (110104200).

Almost surely, 2^220208399 is an apocalyptic number.

220208399 is a deficient number, since it is larger than the sum of its proper divisors (1).

220208399 is an equidigital number, since it uses as much as digits as its factorization.

220208399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 220208399 is about 14839.4204401654. The cubic root of 220208399 is about 603.8716294810.

The spelling of 220208399 in words is "two hundred twenty million, two hundred eight thousand, three hundred ninety-nine".