2209985719 has 2 divisors, whose sum is σ = 2209985720. Its totient is φ = 2209985718.

The previous prime is 2209985699. The next prime is 2209985749. The reversal of 2209985719 is 9175899022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2209985719 - 2¹³ = 2209977527 is a prime.

It is a super-2 number, since 2×2209985719² = 9768073756367893922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2209985749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104992859 + 1104992860.

It is an arithmetic number, because the mean of its divisors is an integer number (1104992860).

Almost surely, 2^2209985719 is an apocalyptic number.

2209985719 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209985719 is an equidigital number, since it uses as much as digits as its factorization.

2209985719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 2209985719 is about 47010.4852027715. The cubic root of 2209985719 is about 1302.5562560082.

The spelling of 2209985719 in words is "two billion, two hundred nine million, nine hundred eighty-five thousand, seven hundred nineteen".