709481249 has 2 divisors, whose sum is σ = 709481250. Its totient is φ = 709481248.

The previous prime is 709481243. The next prime is 709481251. The reversal of 709481249 is 942184907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 662805025 + 46676224 = 25745^2 + 6832^2 .

It is an emirp because it is prime and its reverse (942184907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 709481249 - 2¹⁶ = 709415713 is a prime.

Together with 709481251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (709481243) 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, 354740624 + 354740625.

It is an arithmetic number, because the mean of its divisors is an integer number (354740625).

Almost surely, 2^709481249 is an apocalyptic number.

It is an amenable number.

709481249 is a deficient number, since it is larger than the sum of its proper divisors (1).

709481249 is an equidigital number, since it uses as much as digits as its factorization.

709481249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 709481249 is about 26636.0892212051. The cubic root of 709481249 is about 891.8948179952.

The spelling of 709481249 in words is "seven hundred nine million, four hundred eighty-one thousand, two hundred forty-nine".