802684489 has 2 divisors, whose sum is σ = 802684490. Its totient is φ = 802684488.

The previous prime is 802684423. The next prime is 802684499. The reversal of 802684489 is 984486208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402684489 + 400000000 = 20067^2 + 20000^2 .

It is a cyclic number.

It is not a de Polignac number, because 802684489 - 2⁹ = 802683977 is a prime.

It is a super-2 number, since 2×802684489² = 1288604777762382242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (802684499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401342244 + 401342245.

It is an arithmetic number, because the mean of its divisors is an integer number (401342245).

Almost surely, 2^802684489 is an apocalyptic number.

It is an amenable number.

802684489 is a deficient number, since it is larger than the sum of its proper divisors (1).

802684489 is an equidigital number, since it uses as much as digits as its factorization.

802684489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 802684489 is about 28331.6870129542. The cubic root of 802684489 is about 929.3549652884.

The spelling of 802684489 in words is "eight hundred two million, six hundred eighty-four thousand, four hundred eighty-nine".