4393481 has 2 divisors, whose sum is σ = 4393482. Its totient is φ = 4393480.

The previous prime is 4393451. The next prime is 4393489. The reversal of 4393481 is 1843934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 67081 = 2080^2 + 259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4393481 is a prime.

It is a super-2 number, since 2×4393481² = 38605350594722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4393489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2196740 + 2196741.

It is an arithmetic number, because the mean of its divisors is an integer number (2196741).

Almost surely, 2^4393481 is an apocalyptic number.

It is an amenable number.

4393481 is a deficient number, since it is larger than the sum of its proper divisors (1).

4393481 is an equidigital number, since it uses as much as digits as its factorization.

4393481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 4393481 is about 2096.0632146956. The cubic root of 4393481 is about 163.7832875241.

The spelling of 4393481 in words is "four million, three hundred ninety-three thousand, four hundred eighty-one".