4247438668 has 24 divisors (see below), whose sum is σ = 8110431504. Its totient is φ = 1930252800.

The previous prime is 4247438659. The next prime is 4247438677. The reversal of 4247438668 is 8668347424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4247438659) and next prime (4247438677).

It is a super-2 number, since 2×4247438668² = 36081470476843228448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346728 + ... + 358768.

It is an arithmetic number, because the mean of its divisors is an integer number (337934646).

Almost surely, 2^4247438668 is an apocalyptic number.

It is an amenable number.

4247438668 is a deficient number, since it is larger than the sum of its proper divisors (3862992836).

4247438668 is a wasteful number, since it uses less digits than its factorization.

4247438668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20073 (or 20071 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 52.

The square root of 4247438668 is about 65172.3765716734. The cubic root of 4247438668 is about 1619.4804344093.

The spelling of 4247438668 in words is "four billion, two hundred forty-seven million, four hundred thirty-eight thousand, six hundred sixty-eight".