447855364793 has 2 divisors, whose sum is σ = 447855364794. Its totient is φ = 447855364792.

The previous prime is 447855364669. The next prime is 447855364811. The reversal of 447855364793 is 397463558744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390671251369 + 57184113424 = 625037^2 + 239132^2 .

It is a cyclic number.

It is not a de Polignac number, because 447855364793 - 2³⁴ = 430675495609 is a prime.

It is a super-2 number, since 2×447855364793² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (447855394793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223927682396 + 223927682397.

It is an arithmetic number, because the mean of its divisors is an integer number (223927682397).

Almost surely, 2^447855364793 is an apocalyptic number.

It is an amenable number.

447855364793 is a deficient number, since it is larger than the sum of its proper divisors (1).

447855364793 is an equidigital number, since it uses as much as digits as its factorization.

447855364793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 304819200, while the sum is 65.

The spelling of 447855364793 in words is "four hundred forty-seven billion, eight hundred fifty-five million, three hundred sixty-four thousand, seven hundred ninety-three".