284863997 has 4 divisors (see below), whose sum is σ = 310760736. Its totient is φ = 258967260.

The previous prime is 284863981. The next prime is 284864003. The reversal of 284863997 is 799368482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 284863997 - 2⁴ = 284863981 is a prime.

It is a super-2 number, since 2×284863997² = 162294993573632018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284863937) 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 in 3 ways as a sum of consecutive naturals, for example, 12948353 + ... + 12948374.

It is an arithmetic number, because the mean of its divisors is an integer number (77690184).

Almost surely, 2^284863997 is an apocalyptic number.

It is an amenable number.

284863997 is a deficient number, since it is larger than the sum of its proper divisors (25896739).

284863997 is a wasteful number, since it uses less digits than its factorization.

284863997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25896738.

The product of its digits is 5225472, while the sum is 56.

The square root of 284863997 is about 16877.9144742471. The cubic root of 284863997 is about 657.9797398011.

The spelling of 284863997 in words is "two hundred eighty-four million, eight hundred sixty-three thousand, nine hundred ninety-seven".