4238891 has 4 divisors (see below), whose sum is σ = 4297032. Its totient is φ = 4180752.

The previous prime is 4238873. The next prime is 4238911. The reversal of 4238891 is 1988324.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4238891 - 2¹⁰ = 4237867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4238851) 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, 28961 + ... + 29106.

It is an arithmetic number, because the mean of its divisors is an integer number (1074258).

Almost surely, 2^4238891 is an apocalyptic number.

4238891 is a deficient number, since it is larger than the sum of its proper divisors (58141).

4238891 is an equidigital number, since it uses as much as digits as its factorization.

4238891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58140.

The product of its digits is 13824, while the sum is 35.

The square root of 4238891 is about 2058.8567215812. The cubic root of 4238891 is about 161.8393341816.

The spelling of 4238891 in words is "four million, two hundred thirty-eight thousand, eight hundred ninety-one".