284674879 has 2 divisors, whose sum is σ = 284674880. Its totient is φ = 284674878.

The previous prime is 284674837. The next prime is 284674883. The reversal of 284674879 is 978476482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-284674879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284674889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142337439 + 142337440.

It is an arithmetic number, because the mean of its divisors is an integer number (142337440).

Almost surely, 2^284674879 is an apocalyptic number.

284674879 is a deficient number, since it is larger than the sum of its proper divisors (1).

284674879 is an equidigital number, since it uses as much as digits as its factorization.

284674879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 55.

The square root of 284674879 is about 16872.3110153885. The cubic root of 284674879 is about 657.8340991198.

The spelling of 284674879 in words is "two hundred eighty-four million, six hundred seventy-four thousand, eight hundred seventy-nine".