4397791 has 4 divisors (see below), whose sum is σ = 4440592. Its totient is φ = 4354992.

The previous prime is 4397779. The next prime is 4397803. The reversal of 4397791 is 1977934.

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

It is an interprime number because it is at equal distance from previous prime (4397779) and next prime (4397803).

It is a cyclic number.

It is not a de Polignac number, because 4397791 - 2⁷ = 4397663 is a prime.

It is a Duffinian number.

4397791 is a lucky number.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21246 + ... + 21451.

It is an arithmetic number, because the mean of its divisors is an integer number (1110148).

Almost surely, 2^4397791 is an apocalyptic number.

4397791 is a deficient number, since it is larger than the sum of its proper divisors (42801).

4397791 is a wasteful number, since it uses less digits than its factorization.

4397791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42800.

The product of its digits is 47628, while the sum is 40.

The square root of 4397791 is about 2097.0910805208. The cubic root of 4397791 is about 163.8368270951.

The spelling of 4397791 in words is "four million, three hundred ninety-seven thousand, seven hundred ninety-one".