4247215285 has 4 divisors (see below), whose sum is σ = 5096658348. Its totient is φ = 3397772224.

The previous prime is 4247215283. The next prime is 4247215289. The reversal of 4247215285 is 5825127424.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2907582084 + 1339633201 = 53922^2 + 36601^2 .

It is a cyclic number.

It is not a de Polignac number, because 4247215285 - 2¹ = 4247215283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247215283) 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, 424721524 + ... + 424721533.

It is an arithmetic number, because the mean of its divisors is an integer number (1274164587).

Almost surely, 2^4247215285 is an apocalyptic number.

It is an amenable number.

4247215285 is a deficient number, since it is larger than the sum of its proper divisors (849443063).

4247215285 is an equidigital number, since it uses as much as digits as its factorization.

4247215285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849443062.

The product of its digits is 179200, while the sum is 40.

The square root of 4247215285 is about 65170.6627632403. The cubic root of 4247215285 is about 1619.4520431231.

The spelling of 4247215285 in words is "four billion, two hundred forty-seven million, two hundred fifteen thousand, two hundred eighty-five".