4994789 has 2 divisors, whose sum is σ = 4994790. Its totient is φ = 4994788.

The previous prime is 4994761. The next prime is 4994791. The reversal of 4994789 is 9874994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 1844164 = 1775^2 + 1358^2 .

It is a cyclic number.

It is not a de Polignac number, because 4994789 - 2¹² = 4990693 is a prime.

It is a Sophie Germain prime.

Together with 4994791, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4994729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2497394 + 2497395.

It is an arithmetic number, because the mean of its divisors is an integer number (2497395).

Almost surely, 2^4994789 is an apocalyptic number.

It is an amenable number.

4994789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4994789 is an equidigital number, since it uses as much as digits as its factorization.

4994789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 4994789 is about 2234.9024587216. The cubic root of 4994789 is about 170.9381694542.

The spelling of 4994789 in words is "four million, nine hundred ninety-four thousand, seven hundred eighty-nine".