4992809 has 2 divisors, whose sum is σ = 4992810. Its totient is φ = 4992808.

The previous prime is 4992787. The next prime is 4992821. The reversal of 4992809 is 9082994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3341584 + 1651225 = 1828^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 4992809 - 2¹² = 4988713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4992109) 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, 2496404 + 2496405.

It is an arithmetic number, because the mean of its divisors is an integer number (2496405).

Almost surely, 2^4992809 is an apocalyptic number.

It is an amenable number.

4992809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4992809 is an equidigital number, since it uses as much as digits as its factorization.

4992809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 4992809 is about 2234.4594424603. The cubic root of 4992809 is about 170.9155790899.

The spelling of 4992809 in words is "four million, nine hundred ninety-two thousand, eight hundred nine".