100865099 has 2 divisors, whose sum is σ = 100865100. Its totient is φ = 100865098.

The previous prime is 100865087. The next prime is 100865101. The reversal of 100865099 is 990568001.

It is a strong prime.

It is an emirp because it is prime and its reverse (990568001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100865099 is a prime.

Together with 100865101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100865069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50432549 + 50432550.

It is an arithmetic number, because the mean of its divisors is an integer number (50432550).

Almost surely, 2^100865099 is an apocalyptic number.

100865099 is a deficient number, since it is larger than the sum of its proper divisors (1).

100865099 is an equidigital number, since it uses as much as digits as its factorization.

100865099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 100865099 is about 10043.1618029384. The cubic root of 100865099 is about 465.4935200382.

The spelling of 100865099 in words is "one hundred million, eight hundred sixty-five thousand, ninety-nine".