285969487 has 2 divisors, whose sum is σ = 285969488. Its totient is φ = 285969486.

The previous prime is 285969473. The next prime is 285969491. The reversal of 285969487 is 784969582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285969487 - 2²⁷ = 151751759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285969407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142984743 + 142984744.

It is an arithmetic number, because the mean of its divisors is an integer number (142984744).

Almost surely, 2^285969487 is an apocalyptic number.

285969487 is a deficient number, since it is larger than the sum of its proper divisors (1).

285969487 is an equidigital number, since it uses as much as digits as its factorization.

285969487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 58.

The square root of 285969487 is about 16910.6323654676. The cubic root of 285969487 is about 658.8297958636.

It can be divided in two parts, 28596 and 9487, that added together give a palindrome (38083).

The spelling of 285969487 in words is "two hundred eighty-five million, nine hundred sixty-nine thousand, four hundred eighty-seven".