284655947 has 4 divisors (see below), whose sum is σ = 284704440. Its totient is φ = 284607456.

The previous prime is 284655937. The next prime is 284655953. The reversal of 284655947 is 749556482.

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 284655947 - 2²⁰ = 283607371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284655895 and 284655904.

It is not an unprimeable number, because it can be changed into a prime (284655937) 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, 13997 + ... + 27662.

It is an arithmetic number, because the mean of its divisors is an integer number (71176110).

Almost surely, 2^284655947 is an apocalyptic number.

284655947 is a deficient number, since it is larger than the sum of its proper divisors (48493).

284655947 is an equidigital number, since it uses as much as digits as its factorization.

284655947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48492.

The product of its digits is 2419200, while the sum is 50.

The square root of 284655947 is about 16871.7499685125. The cubic root of 284655947 is about 657.8195159442.

The spelling of 284655947 in words is "two hundred eighty-four million, six hundred fifty-five thousand, nine hundred forty-seven".