4243938 has 16 divisors (see below), whose sum is σ = 8508576. Its totient is φ = 1411200.

The previous prime is 4243933. The next prime is 4243949. The reversal of 4243938 is 8393424.

It is a super-2 number, since 2×4243938² = 36022019495688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4243899 and 4243908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3513 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (531786).

Almost surely, 2^4243938 is an apocalyptic number.

4243938 is an abundant number, since it is smaller than the sum of its proper divisors (4264638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4243938 is a wasteful number, since it uses less digits than its factorization.

4243938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729.

The product of its digits is 20736, while the sum is 33.

The square root of 4243938 is about 2060.0820372014. The cubic root of 4243938 is about 161.9035395882.

The spelling of 4243938 in words is "four million, two hundred forty-three thousand, nine hundred thirty-eight".