4394207393 has 2 divisors, whose sum is σ = 4394207394. Its totient is φ = 4394207392.

The previous prime is 4394207371. The next prime is 4394207399. The reversal of 4394207393 is 3937024934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2361279649 + 2032927744 = 48593^2 + 45088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4394207393 is a prime.

It is a super-3 number, since 3×4394207393³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4394207399) 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, 2197103696 + 2197103697.

It is an arithmetic number, because the mean of its divisors is an integer number (2197103697).

Almost surely, 2^4394207393 is an apocalyptic number.

It is an amenable number.

4394207393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4394207393 is an equidigital number, since it uses as much as digits as its factorization.

4394207393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 44.

The square root of 4394207393 is about 66288.8180087713. The cubic root of 4394207393 is about 1637.9231335710.

The spelling of 4394207393 in words is "four billion, three hundred ninety-four million, two hundred seven thousand, three hundred ninety-three".