447138259 has 2 divisors, whose sum is σ = 447138260. Its totient is φ = 447138258.

The previous prime is 447138221. The next prime is 447138277. The reversal of 447138259 is 952831744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447138259 - 2¹⁹ = 446613971 is a prime.

It is not a weakly prime, because it can be changed into another prime (447138859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223569129 + 223569130.

It is an arithmetic number, because the mean of its divisors is an integer number (223569130).

Almost surely, 2^447138259 is an apocalyptic number.

447138259 is a deficient number, since it is larger than the sum of its proper divisors (1).

447138259 is an equidigital number, since it uses as much as digits as its factorization.

447138259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 447138259 is about 21145.6439722227. The cubic root of 447138259 is about 764.6815477193.

The spelling of 447138259 in words is "four hundred forty-seven million, one hundred thirty-eight thousand, two hundred fifty-nine".