4391958 has 16 divisors (see below), whose sum is σ = 8809920. Its totient is φ = 1459656.

The previous prime is 4391957. The next prime is 4391969. The reversal of 4391958 is 8591934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641 + ... + 3387.

It is an arithmetic number, because the mean of its divisors is an integer number (550620).

Almost surely, 2^4391958 is an apocalyptic number.

4391958 is an abundant number, since it is smaller than the sum of its proper divisors (4417962).

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

4391958 is a wasteful number, since it uses less digits than its factorization.

4391958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its digits is 38880, while the sum is 39.

The square root of 4391958 is about 2095.6998830940. The cubic root of 4391958 is about 163.7643601803.

The spelling of 4391958 in words is "four million, three hundred ninety-one thousand, nine hundred fifty-eight".