284473897 has 2 divisors, whose sum is σ = 284473898. Its totient is φ = 284473896.

The previous prime is 284473879. The next prime is 284473907. The reversal of 284473897 is 798374482.

Together with previous prime (284473879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269912041 + 14561856 = 16429^2 + 3816^2 .

It is a cyclic number.

It is not a de Polignac number, because 284473897 - 2⁷ = 284473769 is a prime.

It is not a weakly prime, because it can be changed into another prime (284473807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142236948 + 142236949.

It is an arithmetic number, because the mean of its divisors is an integer number (142236949).

Almost surely, 2^284473897 is an apocalyptic number.

It is an amenable number.

284473897 is a deficient number, since it is larger than the sum of its proper divisors (1).

284473897 is an equidigital number, since it uses as much as digits as its factorization.

284473897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 52.

The square root of 284473897 is about 16866.3539924905. The cubic root of 284473897 is about 657.6792511989.

The spelling of 284473897 in words is "two hundred eighty-four million, four hundred seventy-three thousand, eight hundred ninety-seven".