4929809 has 2 divisors, whose sum is σ = 4929810. Its totient is φ = 4929808.

The previous prime is 4929791. The next prime is 4929817. The reversal of 4929809 is 9089294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4190209 + 739600 = 2047^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 4929809 - 2¹⁶ = 4864273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4929109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2464904 + 2464905.

It is an arithmetic number, because the mean of its divisors is an integer number (2464905).

Almost surely, 2^4929809 is an apocalyptic number.

It is an amenable number.

4929809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4929809 is an equidigital number, since it uses as much as digits as its factorization.

4929809 is an evil number, because the sum of its binary digits is even.

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

The square root of 4929809 is about 2220.3173196640. The cubic root of 4929809 is about 170.1936547478.

It can be divided in two parts, 492 and 9809, that added together give a palindrome (10301).

The spelling of 4929809 in words is "four million, nine hundred twenty-nine thousand, eight hundred nine".