285305099 has 2 divisors, whose sum is σ = 285305100. Its totient is φ = 285305098.

The previous prime is 285305081. The next prime is 285305107. The reversal of 285305099 is 990503582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285305099 is a prime.

It is not a weakly prime, because it can be changed into another prime (285305029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142652549 + 142652550.

It is an arithmetic number, because the mean of its divisors is an integer number (142652550).

Almost surely, 2^285305099 is an apocalyptic number.

285305099 is a deficient number, since it is larger than the sum of its proper divisors (1).

285305099 is an equidigital number, since it uses as much as digits as its factorization.

285305099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 285305099 is about 16890.9768515619. The cubic root of 285305099 is about 658.3191842425.

The spelling of 285305099 in words is "two hundred eighty-five million, three hundred five thousand, ninety-nine".