654442249 has 2 divisors, whose sum is σ = 654442250. Its totient is φ = 654442248.

The previous prime is 654442247. The next prime is 654442267. The reversal of 654442249 is 942244456.

654442249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 548496400 + 105945849 = 23420^2 + 10293^2 .

It is a cyclic number.

It is not a de Polignac number, because 654442249 - 2¹ = 654442247 is a prime.

Together with 654442247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (654442247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327221124 + 327221125.

It is an arithmetic number, because the mean of its divisors is an integer number (327221125).

Almost surely, 2^654442249 is an apocalyptic number.

It is an amenable number.

654442249 is a deficient number, since it is larger than the sum of its proper divisors (1).

654442249 is an equidigital number, since it uses as much as digits as its factorization.

654442249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 40.

The square root of 654442249 is about 25582.0688960060. The cubic root of 654442249 is about 868.2079857411.

The spelling of 654442249 in words is "six hundred fifty-four million, four hundred forty-two thousand, two hundred forty-nine".