4391798 has 4 divisors (see below), whose sum is σ = 6587700. Its totient is φ = 2195898.

The previous prime is 4391791. The next prime is 4391813. The reversal of 4391798 is 8971934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8971934 = 2 ⋅4485967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097948 + ... + 1097951.

It is an arithmetic number, because the mean of its divisors is an integer number (1646925).

Almost surely, 2^4391798 is an apocalyptic number.

4391798 is a deficient number, since it is larger than the sum of its proper divisors (2195902).

4391798 is a wasteful number, since it uses less digits than its factorization.

4391798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195901.

The product of its digits is 54432, while the sum is 41.

The square root of 4391798 is about 2095.6617093415. The cubic root of 4391798 is about 163.7623714989.

The spelling of 4391798 in words is "four million, three hundred ninety-one thousand, seven hundred ninety-eight".