4742909 has 2 divisors, whose sum is σ = 4742910. Its totient is φ = 4742908.

The previous prime is 4742897. The next prime is 4742939. The reversal of 4742909 is 9092474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4622500 + 120409 = 2150^2 + 347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4742909 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 4⁷ + 7² + 4¹¹ + 2 + 9³ + 0 + 9⁶ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4742939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2371454 + 2371455.

It is an arithmetic number, because the mean of its divisors is an integer number (2371455).

Almost surely, 2^4742909 is an apocalyptic number.

It is an amenable number.

4742909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4742909 is an equidigital number, since it uses as much as digits as its factorization.

4742909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 4742909 is about 2177.8220772138. The cubic root of 4742909 is about 168.0150803734.

The spelling of 4742909 in words is "four million, seven hundred forty-two thousand, nine hundred nine".