447471407 has 2 divisors, whose sum is σ = 447471408. Its totient is φ = 447471406.

The previous prime is 447471403. The next prime is 447471473. The reversal of 447471407 is 704174744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 447471407 - 2² = 447471403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447471403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223735703 + 223735704.

It is an arithmetic number, because the mean of its divisors is an integer number (223735704).

Almost surely, 2^447471407 is an apocalyptic number.

447471407 is a deficient number, since it is larger than the sum of its proper divisors (1).

447471407 is an equidigital number, since it uses as much as digits as its factorization.

447471407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 38.

The square root of 447471407 is about 21153.5199671355. The cubic root of 447471407 is about 764.8714135905.

The spelling of 447471407 in words is "four hundred forty-seven million, four hundred seventy-one thousand, four hundred seven".