4972909 has 2 divisors, whose sum is σ = 4972910. Its totient is φ = 4972908.

The previous prime is 4972897. The next prime is 4972921. The reversal of 4972909 is 9092794.

It is a balanced prime because it is at equal distance from previous prime (4972897) and next prime (4972921).

It can be written as a sum of positive squares in only one way, i.e., 4972900 + 9 = 2230^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 4972909 - 2²¹ = 2875757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4972969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2486454 + 2486455.

It is an arithmetic number, because the mean of its divisors is an integer number (2486455).

Almost surely, 2^4972909 is an apocalyptic number.

It is an amenable number.

4972909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4972909 is an equidigital number, since it uses as much as digits as its factorization.

4972909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 4972909 is about 2230.0020179363. The cubic root of 4972909 is about 170.6882021537.

Subtracting 4972909 from its reverse (9092794), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 4972909 in words is "four million, nine hundred seventy-two thousand, nine hundred nine".