4389557 has 2 divisors, whose sum is σ = 4389558. Its totient is φ = 4389556.

The previous prime is 4389547. The next prime is 4389559. The reversal of 4389557 is 7559834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2515396 + 1874161 = 1586^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 4389557 - 2¹² = 4385461 is a prime.

Together with 4389559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4389559) 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 as a sum of consecutive naturals, namely, 2194778 + 2194779.

It is an arithmetic number, because the mean of its divisors is an integer number (2194779).

Almost surely, 2^4389557 is an apocalyptic number.

It is an amenable number.

4389557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4389557 is an equidigital number, since it uses as much as digits as its factorization.

4389557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 4389557 is about 2095.1269651265. The cubic root of 4389557 is about 163.7345124524.

The spelling of 4389557 in words is "four million, three hundred eighty-nine thousand, five hundred fifty-seven".