609212099 has 2 divisors, whose sum is σ = 609212100. Its totient is φ = 609212098.

The previous prime is 609212069. The next prime is 609212117. The reversal of 609212099 is 990212906.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 609212099 - 2¹² = 609208003 is a prime.

It is a super-2 number, since 2×609212099² = 742278763135971602, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (609212069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304606049 + 304606050.

It is an arithmetic number, because the mean of its divisors is an integer number (304606050).

Almost surely, 2^609212099 is an apocalyptic number.

609212099 is a deficient number, since it is larger than the sum of its proper divisors (1).

609212099 is an equidigital number, since it uses as much as digits as its factorization.

609212099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 609212099 is about 24682.2223270110. Note that the first 3 decimals coincide. The cubic root of 609212099 is about 847.7273078005.

The spelling of 609212099 in words is "six hundred nine million, two hundred twelve thousand, ninety-nine".