4945939 has 2 divisors, whose sum is σ = 4945940. Its totient is φ = 4945938.

The previous prime is 4945937. The next prime is 4945961. The reversal of 4945939 is 9395494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4945939 - 2¹ = 4945937 is a prime.

Together with 4945937, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 4⁷ + 9 + 4⁸ + 5⁷ + 9³ + 3⁷ + 9⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 4945895 and 4945904.

It is not a weakly prime, because it can be changed into another prime (4945937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472969 + 2472970.

It is an arithmetic number, because the mean of its divisors is an integer number (2472970).

Almost surely, 2^4945939 is an apocalyptic number.

4945939 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945939 is an equidigital number, since it uses as much as digits as its factorization.

4945939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 4945939 is about 2223.9467169876. The cubic root of 4945939 is about 170.3790733594.

The spelling of 4945939 in words is "four million, nine hundred forty-five thousand, nine hundred thirty-nine".