284345639 has 2 divisors, whose sum is σ = 284345640. Its totient is φ = 284345638.

The previous prime is 284345599. The next prime is 284345647. The reversal of 284345639 is 936543482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 284345639 - 2¹² = 284341543 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284345639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284345239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142172819 + 142172820.

It is an arithmetic number, because the mean of its divisors is an integer number (142172820).

Almost surely, 2^284345639 is an apocalyptic number.

284345639 is a deficient number, since it is larger than the sum of its proper divisors (1).

284345639 is an equidigital number, since it uses as much as digits as its factorization.

284345639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The square root of 284345639 is about 16862.5513787208. The cubic root of 284345639 is about 657.5803958423.

The spelling of 284345639 in words is "two hundred eighty-four million, three hundred forty-five thousand, six hundred thirty-nine".