4247385 has 8 divisors (see below), whose sum is σ = 6795840. Its totient is φ = 2265264.

The previous prime is 4247381. The next prime is 4247389. The reversal of 4247385 is 5837424.

It is an interprime number because it is at equal distance from previous prime (4247381) and next prime (4247389).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4247385 - 2² = 4247381 is a prime.

It is a d-powerful number, because it can be written as 4³ + 2¹⁵ + 4¹¹ + 7² + 3⁹ + 8³ + 5 .

4247385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4247381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141565 + ... + 141594.

It is an arithmetic number, because the mean of its divisors is an integer number (849480).

Almost surely, 2^4247385 is an apocalyptic number.

It is an amenable number.

4247385 is a deficient number, since it is larger than the sum of its proper divisors (2548455).

4247385 is a wasteful number, since it uses less digits than its factorization.

4247385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283167.

The product of its digits is 26880, while the sum is 33.

The square root of 4247385 is about 2060.9184845597. The cubic root of 4247385 is about 161.9473613464.

The spelling of 4247385 in words is "four million, two hundred forty-seven thousand, three hundred eighty-five".