4394943491 has 2 divisors, whose sum is σ = 4394943492. Its totient is φ = 4394943490.

The previous prime is 4394943419. The next prime is 4394943499. The reversal of 4394943491 is 1943494934.

It is a happy number.

4394943491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (4394943419) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4394943491 - 2²⁶ = 4327834627 is a prime.

It is not a weakly prime, because it can be changed into another prime (4394943499) 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, 2197471745 + 2197471746.

It is an arithmetic number, because the mean of its divisors is an integer number (2197471746).

Almost surely, 2^4394943491 is an apocalyptic number.

4394943491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4394943491 is an equidigital number, since it uses as much as digits as its factorization.

4394943491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 50.

The square root of 4394943491 is about 66294.3699796597. The cubic root of 4394943491 is about 1638.0145876542.

The spelling of 4394943491 in words is "four billion, three hundred ninety-four million, nine hundred forty-three thousand, four hundred ninety-one".