282991997 has 2 divisors, whose sum is σ = 282991998. Its totient is φ = 282991996.

The previous prime is 282991967. The next prime is 282992011. The reversal of 282991997 is 799199282.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242300356 + 40691641 = 15566^2 + 6379^2 .

It is a cyclic number.

It is not a de Polignac number, because 282991997 - 2¹⁰ = 282990973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (282991927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141495998 + 141495999.

It is an arithmetic number, because the mean of its divisors is an integer number (141495999).

Almost surely, 2^282991997 is an apocalyptic number.

It is an amenable number.

282991997 is a deficient number, since it is larger than the sum of its proper divisors (1).

282991997 is an equidigital number, since it uses as much as digits as its factorization.

282991997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 56.

The square root of 282991997 is about 16822.3659750940. The cubic root of 282991997 is about 656.5352538645.

The spelling of 282991997 in words is "two hundred eighty-two million, nine hundred ninety-one thousand, nine hundred ninety-seven".