4993565989 has 2 divisors, whose sum is σ = 4993565990. Its totient is φ = 4993565988.

The previous prime is 4993565981. The next prime is 4993566029. The reversal of 4993565989 is 9895653994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3965850625 + 1027715364 = 62975^2 + 32058^2 .

It is a cyclic number.

It is not a de Polignac number, because 4993565989 - 2³ = 4993565981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4993565981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2496782994 + 2496782995.

It is an arithmetic number, because the mean of its divisors is an integer number (2496782995).

Almost surely, 2^4993565989 is an apocalyptic number.

It is an amenable number.

4993565989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4993565989 is an equidigital number, since it uses as much as digits as its factorization.

4993565989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94478400, while the sum is 67.

The square root of 4993565989 is about 70665.1681452751. The cubic root of 4993565989 is about 1709.2421649059.

The spelling of 4993565989 in words is "four billion, nine hundred ninety-three million, five hundred sixty-five thousand, nine hundred eighty-nine".