285044609 has 2 divisors, whose sum is σ = 285044610. Its totient is φ = 285044608.

The previous prime is 285044537. The next prime is 285044629. The reversal of 285044609 is 906440582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204404209 + 80640400 = 14297^2 + 8980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285044609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285044629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142522304 + 142522305.

It is an arithmetic number, because the mean of its divisors is an integer number (142522305).

Almost surely, 2^285044609 is an apocalyptic number.

It is an amenable number.

285044609 is a deficient number, since it is larger than the sum of its proper divisors (1).

285044609 is an equidigital number, since it uses as much as digits as its factorization.

285044609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 285044609 is about 16883.2641689929. The cubic root of 285044609 is about 658.1187698073.

The spelling of 285044609 in words is "two hundred eighty-five million, forty-four thousand, six hundred nine".