284474873 has 2 divisors, whose sum is σ = 284474874. Its totient is φ = 284474872.

The previous prime is 284474863. The next prime is 284474887. The reversal of 284474873 is 378474482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232013824 + 52461049 = 15232^2 + 7243^2 .

It is a cyclic number.

It is not a de Polignac number, because 284474873 - 2¹² = 284470777 is a prime.

It is a super-2 number, since 2×284474873² = 161851906736732258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (284474803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142237436 + 142237437.

It is an arithmetic number, because the mean of its divisors is an integer number (142237437).

Almost surely, 2^284474873 is an apocalyptic number.

It is an amenable number.

284474873 is a deficient number, since it is larger than the sum of its proper divisors (1).

284474873 is an equidigital number, since it uses as much as digits as its factorization.

284474873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1204224, while the sum is 47.

The square root of 284474873 is about 16866.3829258084. The cubic root of 284474873 is about 657.6800033408.

The spelling of 284474873 in words is "two hundred eighty-four million, four hundred seventy-four thousand, eight hundred seventy-three".