109285999 has 2 divisors, whose sum is σ = 109286000. Its totient is φ = 109285998.

The previous prime is 109285997. The next prime is 109286059. The reversal of 109285999 is 999582901.

It is a weak prime.

It is an emirp because it is prime and its reverse (999582901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109285999 - 2¹ = 109285997 is a prime.

Together with 109285997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109285997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54642999 + 54643000.

It is an arithmetic number, because the mean of its divisors is an integer number (54643000).

Almost surely, 2^109285999 is an apocalyptic number.

109285999 is a deficient number, since it is larger than the sum of its proper divisors (1).

109285999 is an equidigital number, since it uses as much as digits as its factorization.

109285999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 52.

The square root of 109285999 is about 10453.9944040544. The cubic root of 109285999 is about 478.1030440827.

The spelling of 109285999 in words is "one hundred nine million, two hundred eighty-five thousand, nine hundred ninety-nine".