285405199 has 2 divisors, whose sum is σ = 285405200. Its totient is φ = 285405198.

The previous prime is 285405191. The next prime is 285405221. The reversal of 285405199 is 991504582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285405199 - 2³ = 285405191 is a prime.

It is a super-2 number, since 2×285405199² = 162912255232459202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285405191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142702599 + 142702600.

It is an arithmetic number, because the mean of its divisors is an integer number (142702600).

Almost surely, 2^285405199 is an apocalyptic number.

285405199 is a deficient number, since it is larger than the sum of its proper divisors (1).

285405199 is an equidigital number, since it uses as much as digits as its factorization.

285405199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 285405199 is about 16893.9397122163. The cubic root of 285405199 is about 658.3961662118.

The spelling of 285405199 in words is "two hundred eighty-five million, four hundred five thousand, one hundred ninety-nine".