4247869 has 4 divisors (see below), whose sum is σ = 4251996. Its totient is φ = 4243744.

The previous prime is 4247863. The next prime is 4247917. The reversal of 4247869 is 9687424.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 3667225 = 762^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 4247869 - 2⁷ = 4247741 is a prime.

It is a super-2 number, since 2×4247869² = 36088782082322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247863) 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, 897 + ... + 3049.

It is an arithmetic number, because the mean of its divisors is an integer number (1062999).

Almost surely, 2^4247869 is an apocalyptic number.

It is an amenable number.

4247869 is a deficient number, since it is larger than the sum of its proper divisors (4127).

4247869 is a wasteful number, since it uses less digits than its factorization.

4247869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126.

The product of its digits is 96768, while the sum is 40.

The square root of 4247869 is about 2061.0359045878. The cubic root of 4247869 is about 161.9535125465.

The spelling of 4247869 in words is "four million, two hundred forty-seven thousand, eight hundred sixty-nine".