284505379 has 2 divisors, whose sum is σ = 284505380. Its totient is φ = 284505378.

The previous prime is 284505371. The next prime is 284505391. The reversal of 284505379 is 973505482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284505379 - 2³ = 284505371 is a prime.

It is not a weakly prime, because it can be changed into another prime (284505371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142252689 + 142252690.

It is an arithmetic number, because the mean of its divisors is an integer number (142252690).

Almost surely, 2^284505379 is an apocalyptic number.

284505379 is a deficient number, since it is larger than the sum of its proper divisors (1).

284505379 is an equidigital number, since it uses as much as digits as its factorization.

284505379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 284505379 is about 16867.2872448417. The cubic root of 284505379 is about 657.7035115320.

The spelling of 284505379 in words is "two hundred eighty-four million, five hundred five thousand, three hundred seventy-nine".