4239858 has 48 divisors (see below), whose sum is σ = 10198080. Its totient is φ = 1149792.

The previous prime is 4239857. The next prime is 4239877. The reversal of 4239858 is 8589324.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4239853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71833 + ... + 71891.

It is an arithmetic number, because the mean of its divisors is an integer number (212460).

Almost surely, 2^4239858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4239858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5099040).

4239858 is an abundant number, since it is smaller than the sum of its proper divisors (5958222).

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

4239858 is a wasteful number, since it uses less digits than its factorization.

4239858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 100 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 4239858 is about 2059.0915472606. The cubic root of 4239858 is about 161.8516398166.

The spelling of 4239858 in words is "four million, two hundred thirty-nine thousand, eight hundred fifty-eight".