284415949 has 2 divisors, whose sum is σ = 284415950. Its totient is φ = 284415948.

The previous prime is 284415947. The next prime is 284415991. The reversal of 284415949 is 949514482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212284900 + 72131049 = 14570^2 + 8493^2 .

It is a cyclic number.

It is not a de Polignac number, because 284415949 - 2¹ = 284415947 is a prime.

Together with 284415947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 284415899 and 284415908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284415947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142207974 + 142207975.

It is an arithmetic number, because the mean of its divisors is an integer number (142207975).

Almost surely, 2^284415949 is an apocalyptic number.

It is an amenable number.

284415949 is a deficient number, since it is larger than the sum of its proper divisors (1).

284415949 is an equidigital number, since it uses as much as digits as its factorization.

284415949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 284415949 is about 16864.6360470661. The cubic root of 284415949 is about 657.6345912310.

The spelling of 284415949 in words is "two hundred eighty-four million, four hundred fifteen thousand, nine hundred forty-nine".