447315889 has 2 divisors, whose sum is σ = 447315890. Its totient is φ = 447315888.

The previous prime is 447315881. The next prime is 447315929. The reversal of 447315889 is 988513744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395691664 + 51624225 = 19892^2 + 7185^2 .

It is a cyclic number.

It is not a de Polignac number, because 447315889 - 2³ = 447315881 is a prime.

It is not a weakly prime, because it can be changed into another prime (447315881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223657944 + 223657945.

It is an arithmetic number, because the mean of its divisors is an integer number (223657945).

Almost surely, 2^447315889 is an apocalyptic number.

It is an amenable number.

447315889 is a deficient number, since it is larger than the sum of its proper divisors (1).

447315889 is an equidigital number, since it uses as much as digits as its factorization.

447315889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 447315889 is about 21149.8437110065. The cubic root of 447315889 is about 764.7827933616.

The spelling of 447315889 in words is "four hundred forty-seven million, three hundred fifteen thousand, eight hundred eighty-nine".