4869209 has 2 divisors, whose sum is σ = 4869210. Its totient is φ = 4869208.

The previous prime is 4869181. The next prime is 4869223. The reversal of 4869209 is 9029684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3139984 + 1729225 = 1772^2 + 1315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4869209 is a prime.

It is a Chen prime.

It is equal to p₃₃₉₉₅₉ and since 4869209 and 339959 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4869229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2434604 + 2434605.

It is an arithmetic number, because the mean of its divisors is an integer number (2434605).

Almost surely, 2^4869209 is an apocalyptic number.

It is an amenable number.

4869209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4869209 is an equidigital number, since it uses as much as digits as its factorization.

4869209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 4869209 is about 2206.6284236364. The cubic root of 4869209 is about 169.4934053583.

It can be divided in two parts, 486920 and 9, that multiplied together give a triangular number (4382280 = T₂₉₆₀).

The spelling of 4869209 in words is "four million, eight hundred sixty-nine thousand, two hundred nine".