262889489 has 2 divisors, whose sum is σ = 262889490. Its totient is φ = 262889488.

The previous prime is 262889483. The next prime is 262889521. The reversal of 262889489 is 984988262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261889489 + 1000000 = 16183^2 + 1000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262889489 is a prime.

It is a super-2 number, since 2×262889489² = 138221766853362242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (262889483) 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, 131444744 + 131444745.

It is an arithmetic number, because the mean of its divisors is an integer number (131444745).

Almost surely, 2^262889489 is an apocalyptic number.

It is an amenable number.

262889489 is a deficient number, since it is larger than the sum of its proper divisors (1).

262889489 is an equidigital number, since it uses as much as digits as its factorization.

262889489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 56.

The square root of 262889489 is about 16213.8671821376. The cubic root of 262889489 is about 640.6061063125.

The spelling of 262889489 in words is "two hundred sixty-two million, eight hundred eighty-nine thousand, four hundred eighty-nine".