447986197 has 2 divisors, whose sum is σ = 447986198. Its totient is φ = 447986196.

The previous prime is 447986173. The next prime is 447986251. The reversal of 447986197 is 791689744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332187076 + 115799121 = 18226^2 + 10761^2 .

It is a cyclic number.

It is not a de Polignac number, because 447986197 - 2⁷ = 447986069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447986117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223993098 + 223993099.

It is an arithmetic number, because the mean of its divisors is an integer number (223993099).

Almost surely, 2^447986197 is an apocalyptic number.

It is an amenable number.

447986197 is a deficient number, since it is larger than the sum of its proper divisors (1).

447986197 is an equidigital number, since it uses as much as digits as its factorization.

447986197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The square root of 447986197 is about 21165.6844207788. The cubic root of 447986197 is about 765.1646146386.

The spelling of 447986197 in words is "four hundred forty-seven million, nine hundred eighty-six thousand, one hundred ninety-seven".