447694861 has 2 divisors, whose sum is σ = 447694862. Its totient is φ = 447694860.

The previous prime is 447694843. The next prime is 447694873. The reversal of 447694861 is 168496744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286658761 + 161036100 = 16931^2 + 12690^2 .

It is a cyclic number.

It is not a de Polignac number, because 447694861 - 2⁵ = 447694829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447694811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223847430 + 223847431.

It is an arithmetic number, because the mean of its divisors is an integer number (223847431).

Almost surely, 2^447694861 is an apocalyptic number.

It is an amenable number.

447694861 is a deficient number, since it is larger than the sum of its proper divisors (1).

447694861 is an equidigital number, since it uses as much as digits as its factorization.

447694861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 447694861 is about 21158.8010293589. The cubic root of 447694861 is about 764.9987104653.

The spelling of 447694861 in words is "four hundred forty-seven million, six hundred ninety-four thousand, eight hundred sixty-one".