284742487 has 2 divisors, whose sum is σ = 284742488. Its totient is φ = 284742486.

The previous prime is 284742467. The next prime is 284742527. The reversal of 284742487 is 784247482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284742487 - 2¹¹ = 284740439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284742407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142371243 + 142371244.

It is an arithmetic number, because the mean of its divisors is an integer number (142371244).

Almost surely, 2^284742487 is an apocalyptic number.

284742487 is a deficient number, since it is larger than the sum of its proper divisors (1).

284742487 is an equidigital number, since it uses as much as digits as its factorization.

284742487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 802816, while the sum is 46.

The square root of 284742487 is about 16874.3144157029. The cubic root of 284742487 is about 657.8861717715.

The spelling of 284742487 in words is "two hundred eighty-four million, seven hundred forty-two thousand, four hundred eighty-seven".