4992409 has 2 divisors, whose sum is σ = 4992410. Its totient is φ = 4992408.

The previous prime is 4992401. The next prime is 4992413. The reversal of 4992409 is 9042994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4928400 + 64009 = 2220^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 4992409 - 2³ = 4992401 is a prime.

4992409 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4992401) 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, 2496204 + 2496205.

It is an arithmetic number, because the mean of its divisors is an integer number (2496205).

Almost surely, 2^4992409 is an apocalyptic number.

It is an amenable number.

4992409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4992409 is an equidigital number, since it uses as much as digits as its factorization.

4992409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 4992409 is about 2234.3699335607. The cubic root of 4992409 is about 170.9110146549.

The spelling of 4992409 in words is "four million, nine hundred ninety-two thousand, four hundred nine".