4243739 has 4 divisors (see below), whose sum is σ = 4255920. Its totient is φ = 4231560.

The previous prime is 4243721. The next prime is 4243747. The reversal of 4243739 is 9373424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4243739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4243039) 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, 5552 + ... + 6269.

It is an arithmetic number, because the mean of its divisors is an integer number (1063980).

Almost surely, 2^4243739 is an apocalyptic number.

4243739 is a deficient number, since it is larger than the sum of its proper divisors (12181).

4243739 is a wasteful number, since it uses less digits than its factorization.

4243739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180.

The product of its digits is 18144, while the sum is 32.

The square root of 4243739 is about 2060.0337375878. The cubic root of 4243739 is about 161.9010089741.

The spelling of 4243739 in words is "four million, two hundred forty-three thousand, seven hundred thirty-nine".