447884813 has 2 divisors, whose sum is σ = 447884814. Its totient is φ = 447884812.

The previous prime is 447884791. The next prime is 447884851. The reversal of 447884813 is 318488744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393744649 + 54140164 = 19843^2 + 7358^2 .

It is a cyclic number.

It is not a de Polignac number, because 447884813 - 2⁸ = 447884557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447884863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223942406 + 223942407.

It is an arithmetic number, because the mean of its divisors is an integer number (223942407).

Almost surely, 2^447884813 is an apocalyptic number.

It is an amenable number.

447884813 is a deficient number, since it is larger than the sum of its proper divisors (1).

447884813 is an equidigital number, since it uses as much as digits as its factorization.

447884813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 688128, while the sum is 47.

The square root of 447884813 is about 21163.2892764806. The cubic root of 447884813 is about 765.1068886770.

The spelling of 447884813 in words is "four hundred forty-seven million, eight hundred eighty-four thousand, eight hundred thirteen".