445547797 has 2 divisors, whose sum is σ = 445547798. Its totient is φ = 445547796.

The previous prime is 445547771. The next prime is 445547803. The reversal of 445547797 is 797745544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427621041 + 17926756 = 20679^2 + 4234^2 .

It is a cyclic number.

It is not a de Polignac number, because 445547797 - 2²⁷ = 311330069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445547197) 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, 222773898 + 222773899.

It is an arithmetic number, because the mean of its divisors is an integer number (222773899).

Almost surely, 2^445547797 is an apocalyptic number.

It is an amenable number.

445547797 is a deficient number, since it is larger than the sum of its proper divisors (1).

445547797 is an equidigital number, since it uses as much as digits as its factorization.

445547797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4939200, while the sum is 52.

The square root of 445547797 is about 21108.0031504640. The cubic root of 445547797 is about 763.7738181959.

The spelling of 445547797 in words is "four hundred forty-five million, five hundred forty-seven thousand, seven hundred ninety-seven".