284200420847 has 4 divisors (see below), whose sum is σ = 324800480976. Its totient is φ = 243600360720.

The previous prime is 284200420769. The next prime is 284200420883. The reversal of 284200420847 is 748024002482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 284200420847 - 2⁸ = 284200420591 is a prime.

It is a super-2 number, since 2×284200420847² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284200429847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20300030054 + ... + 20300030067.

It is an arithmetic number, because the mean of its divisors is an integer number (81200120244).

Almost surely, 2^284200420847 is an apocalyptic number.

284200420847 is a deficient number, since it is larger than the sum of its proper divisors (40600060129).

284200420847 is an equidigital number, since it uses as much as digits as its factorization.

284200420847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40600060128.

The product of its (nonzero) digits is 229376, while the sum is 41.

The spelling of 284200420847 in words is "two hundred eighty-four billion, two hundred million, four hundred twenty thousand, eight hundred forty-seven".