4985499809 has 2 divisors, whose sum is σ = 4985499810. Its totient is φ = 4985499808.

The previous prime is 4985499767. The next prime is 4985499811. The reversal of 4985499809 is 9089945894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4913589409 + 71910400 = 70097^2 + 8480^2 .

It is a cyclic number.

It is not a de Polignac number, because 4985499809 - 2⁸ = 4985499553 is a prime.

Together with 4985499811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4985499839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492749904 + 2492749905.

It is an arithmetic number, because the mean of its divisors is an integer number (2492749905).

Almost surely, 2^4985499809 is an apocalyptic number.

It is an amenable number.

4985499809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4985499809 is an equidigital number, since it uses as much as digits as its factorization.

4985499809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33592320, while the sum is 65.

The square root of 4985499809 is about 70608.0718402648. The cubic root of 4985499809 is about 1708.3213476555.

The spelling of 4985499809 in words is "four billion, nine hundred eighty-five million, four hundred ninety-nine thousand, eight hundred nine".