4247919 has 12 divisors (see below), whose sum is σ = 6608056. Its totient is φ = 2614032.

The previous prime is 4247917. The next prime is 4247923. The reversal of 4247919 is 9197424.

It is not a de Polignac number, because 4247919 - 2¹ = 4247917 is a prime.

It is a super-2 number, since 2×4247919² = 36089631661122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247917) 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 11 ways as a sum of consecutive naturals, for example, 18037 + ... + 18270.

Almost surely, 2^4247919 is an apocalyptic number.

4247919 is a deficient number, since it is larger than the sum of its proper divisors (2360137).

4247919 is a wasteful number, since it uses less digits than its factorization.

4247919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36326 (or 36323 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 4247919 is about 2061.0480343747. The cubic root of 4247919 is about 161.9541479745.

It can be divided in two parts, 42 and 47919, that added together give a square (47961 = 219²).

The spelling of 4247919 in words is "four million, two hundred forty-seven thousand, nine hundred nineteen".