284407889 has 2 divisors, whose sum is σ = 284407890. Its totient is φ = 284407888.

The previous prime is 284407873. The next prime is 284407897. The reversal of 284407889 is 988704482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161086864 + 123321025 = 12692^2 + 11105^2 .

It is a cyclic number.

It is not a de Polignac number, because 284407889 - 2⁴ = 284407873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (284400889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142203944 + 142203945.

It is an arithmetic number, because the mean of its divisors is an integer number (142203945).

Almost surely, 2^284407889 is an apocalyptic number.

It is an amenable number.

284407889 is a deficient number, since it is larger than the sum of its proper divisors (1).

284407889 is an equidigital number, since it uses as much as digits as its factorization.

284407889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 284407889 is about 16864.3970837976. The cubic root of 284407889 is about 657.6283789858.

The spelling of 284407889 in words is "two hundred eighty-four million, four hundred seven thousand, eight hundred eighty-nine".