208448473 has 2 divisors, whose sum is σ = 208448474. Its totient is φ = 208448472.

The previous prime is 208448459. The next prime is 208448483. The reversal of 208448473 is 374844802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122478489 + 85969984 = 11067^2 + 9272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208448473 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (208448483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104224236 + 104224237.

It is an arithmetic number, because the mean of its divisors is an integer number (104224237).

Almost surely, 2^208448473 is an apocalyptic number.

It is an amenable number.

208448473 is a deficient number, since it is larger than the sum of its proper divisors (1).

208448473 is an equidigital number, since it uses as much as digits as its factorization.

208448473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 40.

The square root of 208448473 is about 14437.7447338565. The cubic root of 208448473 is about 592.9247411712.

The spelling of 208448473 in words is "two hundred eight million, four hundred forty-eight thousand, four hundred seventy-three".