284407 has 2 divisors, whose sum is σ = 284408. Its totient is φ = 284406.

The previous prime is 284387. The next prime is 284413. The reversal of 284407 is 704482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 284407 - 2¹⁵ = 251639 is a prime.

284407 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142203 + 142204.

It is an arithmetic number, because the mean of its divisors is an integer number (142204).

2²⁸⁴⁴⁰⁷ is an apocalyptic number.

284407 is a deficient number, since it is larger than the sum of its proper divisors (1).

284407 is an equidigital number, since it uses as much as digits as its factorization.

284407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 284407 is about 533.2982280113. The cubic root of 284407 is about 65.7627693782.

Adding to 284407 its reverse (704482), we get a palindrome (988889).

The spelling of 284407 in words is "two hundred eighty-four thousand, four hundred seven".