284605204139 has 2 divisors, whose sum is σ = 284605204140. Its totient is φ = 284605204138.

The previous prime is 284605204127. The next prime is 284605204229. The reversal of 284605204139 is 931402506482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284605204139 - 2⁴ = 284605204123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284605204139.

It is not a weakly prime, because it can be changed into another prime (284605204739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142302602069 + 142302602070.

It is an arithmetic number, because the mean of its divisors is an integer number (142302602070).

Almost surely, 2^284605204139 is an apocalyptic number.

284605204139 is a deficient number, since it is larger than the sum of its proper divisors (1).

284605204139 is an equidigital number, since it uses as much as digits as its factorization.

284605204139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 284605204139 in words is "two hundred eighty-four billion, six hundred five million, two hundred four thousand, one hundred thirty-nine".