4239090 has 96 divisors (see below), whose sum is σ = 12093120. Its totient is φ = 1026432.

The previous prime is 4239077. The next prime is 4239101. The reversal of 4239090 is 909324.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63237 + ... + 63303.

It is an arithmetic number, because the mean of its divisors is an integer number (125970).

Almost surely, 2^4239090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4239090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6046560).

4239090 is an abundant number, since it is smaller than the sum of its proper divisors (7854030).

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

4239090 is a wasteful number, since it uses less digits than its factorization.

4239090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 4239090 is about 2058.9050488063. The cubic root of 4239090 is about 161.8418667248.

The spelling of 4239090 in words is "four million, two hundred thirty-nine thousand, ninety".