4397971 has 4 divisors (see below), whose sum is σ = 4402944. Its totient is φ = 4393000.

The previous prime is 4397969. The next prime is 4397983. The reversal of 4397971 is 1797934.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4397971 - 2¹ = 4397969 is a prime.

It is a Duffinian number.

4397971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4397941) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 760 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (1100736).

Almost surely, 2^4397971 is an apocalyptic number.

4397971 is a deficient number, since it is larger than the sum of its proper divisors (4973).

4397971 is a wasteful number, since it uses less digits than its factorization.

4397971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

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

The square root of 4397971 is about 2097.1339966726. The cubic root of 4397971 is about 163.8390623254.

The spelling of 4397971 in words is "four million, three hundred ninety-seven thousand, nine hundred seventy-one".