286488889 has 2 divisors, whose sum is σ = 286488890. Its totient is φ = 286488888.

The previous prime is 286488877. The next prime is 286488893. The reversal of 286488889 is 988884682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282508864 + 3980025 = 16808^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 286488889 - 2¹³ = 286480697 is a prime.

It is not a weakly prime, because it can be changed into another prime (286488809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143244444 + 143244445.

It is an arithmetic number, because the mean of its divisors is an integer number (143244445).

Almost surely, 2^286488889 is an apocalyptic number.

It is an amenable number.

286488889 is a deficient number, since it is larger than the sum of its proper divisors (1).

286488889 is an equidigital number, since it uses as much as digits as its factorization.

286488889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14155776, while the sum is 61.

The square root of 286488889 is about 16925.9826598044. The cubic root of 286488889 is about 659.2284287737.

The spelling of 286488889 in words is "two hundred eighty-six million, four hundred eighty-eight thousand, eight hundred eighty-nine".