4389971 has 2 divisors, whose sum is σ = 4389972. Its totient is φ = 4389970.

The previous prime is 4389947. The next prime is 4389977. The reversal of 4389971 is 1799834.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4389971 - 2¹⁴ = 4373587 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (4389977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194985 + 2194986.

It is an arithmetic number, because the mean of its divisors is an integer number (2194986).

Almost surely, 2^4389971 is an apocalyptic number.

4389971 is a deficient number, since it is larger than the sum of its proper divisors (1).

4389971 is an equidigital number, since it uses as much as digits as its factorization.

4389971 is an evil number, because the sum of its binary digits is even.

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

The square root of 4389971 is about 2095.2257634918. The cubic root of 4389971 is about 163.7396598175.

The spelling of 4389971 in words is "four million, three hundred eighty-nine thousand, nine hundred seventy-one".