284745739 has 2 divisors, whose sum is σ = 284745740. Its totient is φ = 284745738.

The previous prime is 284745737. The next prime is 284745793. The reversal of 284745739 is 937547482.

It is a happy number.

Together with next prime (284745793) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284745739 - 2¹ = 284745737 is a prime.

It is a super-2 number, since 2×284745739² = 162160271757312242, which contains 22 as substring.

Together with 284745737, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 284745692 and 284745701.

It is not a weakly prime, because it can be changed into another prime (284745737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142372869 + 142372870.

It is an arithmetic number, because the mean of its divisors is an integer number (142372870).

Almost surely, 2^284745739 is an apocalyptic number.

284745739 is a deficient number, since it is larger than the sum of its proper divisors (1).

284745739 is an equidigital number, since it uses as much as digits as its factorization.

284745739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 49.

The square root of 284745739 is about 16874.4107748982. The cubic root of 284745739 is about 657.8886763008. Note that the first 3 decimals are identical.

The spelling of 284745739 in words is "two hundred eighty-four million, seven hundred forty-five thousand, seven hundred thirty-nine".