447394019 has 2 divisors, whose sum is σ = 447394020. Its totient is φ = 447394018.

The previous prime is 447394001. The next prime is 447394021. The reversal of 447394019 is 910493744.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447394019 is a prime.

It is a super-2 number, since 2×447394019² = 400322816473944722, which contains 22 as substring.

Together with 447394021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (447394039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223697009 + 223697010.

It is an arithmetic number, because the mean of its divisors is an integer number (223697010).

Almost surely, 2^447394019 is an apocalyptic number.

447394019 is a deficient number, since it is larger than the sum of its proper divisors (1).

447394019 is an equidigital number, since it uses as much as digits as its factorization.

447394019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 447394019 is about 21151.6906889260. The cubic root of 447394019 is about 764.8273174534.

The spelling of 447394019 in words is "four hundred forty-seven million, three hundred ninety-four thousand, nineteen".